Global Sexual Orientation Statistics: A Kinsey Scale Analysis of 39 Countries

Introduction: Rediscovering the Kinsey Continuum

In the early decades of the 21st century — an era that historians of the fourth millennium now refer to as the Pre-Unification Period — humanity was still grappling with one of the most fundamental aspects of its own biology: the spectrum of sexual attraction. Historical records show that a researcher named Alfred C. Kinsey, working at Indiana University in the mid-20th century, created what became known as the Kinsey Scale — a seven-point continuum (0 through 6) designed to rate human sexual orientation from exclusively heterosexual to exclusively homosexual, with gradations of bisexuality between.¹ ²

What made Kinsey's contribution so revolutionary was deceptively simple: he rejected the binary. In a civilization that had long insisted human beings were either attracted to the opposite sex or the same sex — and nothing in between — Kinsey's research documented that sexual orientation existed on a fluid, measurable spectrum. His original interviews with thousands of Americans revealed that substantial numbers of people experienced some degree of attraction to both sexes, even when they identified themselves in categorical terms.

Now, more than 1,600 years later, we have access to the complete archival record of 21st-century survey data spanning 39 countries, hundreds of thousands of respondents, and multiple measurement instruments. This analysis synthesizes that evidence into the most comprehensive portrait ever assembled of how human sexual orientation was actually distributed across the globe during the early modern era.

A critical note on methodology: The percentages in this article represent people who reported any degree of non-exclusive heterosexual attraction — from those who were "mostly attracted to the opposite sex" (but acknowledged some same-sex interest) through those who were exclusively attracted to the same sex. This is the broadest defensible measure of people who were not 100% heterosexual. Where available, we also report the narrower "significant same-sex attraction" composite (equal + mostly same + only same) for comparison. All figures come directly from peer-reviewed research and institutional surveys; none have been fabricated or extrapolated.³ ⁴

Section 1: 🇺🇸 United States — The Birthplace of the Kinsey Scale

The American Data: Three Generations of Evidence

The United States holds a unique position in the history of sexual orientation research — it is where the Kinsey Scale was born, where the largest English-language attraction surveys were fielded, and where the most extensive longitudinal identity data has been collected. The American data tells a story of a population far more sexually diverse than its cultural narratives often suggested.

The Original Kinsey Findings (1948–1953)

The historical record begins with Kinsey himself. His team conducted detailed sexual history interviews with approximately 5,300 men and 5,940 women — large samples for their era, though not probability-representative of the national population.¹ ²

Among the most frequently cited original findings:

• 11.6% of white men ages 20–35 received a Kinsey rating of 3 (equally heterosexual and homosexual) for at least some period of their lives
• Among women ages 20–35, approximately 7% of single women and 4% of previously married women were rated at Kinsey 3
• 2–6% of women were reported at rating 5 (predominantly homosexual)
• 1–3% of unmarried women were rated at Kinsey 6 (exclusively homosexual)

These figures demonstrated substantial intermediate and same-sex-oriented experience in mid-20th-century America, though they came from opportunistic rather than probability samples and should not be directly projected as modern population prevalence.

Modern Survey Evidence: Ipsos 2021

The 2021 Ipsos LGBT+ Pride Global Survey provides the most methodologically modern snapshot of American sexual attraction on a Kinsey-compatible continuum.³ Among U.S. respondents:

Calculated percentage of Americans who were not 100% heterosexual: approximately 19% — meaning roughly one in five U.S. adults reported at least some degree of same-sex attraction when given a confidential, multi-category response option.

Of those 19%, the breakdown reveals important texture: - 6% fell into the "mostly opposite-sex" category — people who were predominantly heterosexual but acknowledged some same-sex attraction - 5% reported equal attraction to both sexes - 3% were mostly same-sex attracted - 5% were exclusively same-sex attracted

The BBC Internet Survey: A Deeper American Picture (2005)

The BBC Internet survey, reanalyzed by Rahman and colleagues across 28 nations, included an enormous American subsample of 50,928 respondents — one of the largest sexual-orientation samples ever collected in the United States.⁴

Results using a seven-point same-sex attraction scale:

Calculated percentage with any same-sex attraction: approximately 26% — meaning more than one in four Americans in this sample reported moderate or predominant same-sex attraction.

On the identity side of the same survey: - 88% identified as heterosexual/straight - 7% identified as bisexual - 5% identified as gay or lesbian

This reveals one of the most important findings in 21st-century sexuality research: the attraction-identity gap. In the United States, the gap was approximately 14 percentage points — meaning 14% more people experienced some same-sex attraction than adopted a sexual-minority identity label. This discordance was not evidence of dishonesty; rather, it reflected the fundamental reality that attraction and identity measured different psychological constructs.

The Generational Revolution

Perhaps the most striking pattern in the American data — one that historians now recognize as a harbinger of broader social transformation — was the dramatic generational gradient. Across the Ipsos 2021 global dataset (which included the U.S.):³

This steep gradient — with Gen Z reporting more than double the rate of Baby Boomers — represented one of the clearest cross-national patterns in the entire dataset. Three mechanisms likely contributed simultaneously: genuine cohort differences in experienced attraction; differential willingness to disclose among younger people raised in more accepting environments; and generational differences in how respondents interpreted labels and survey questions.

U.S. Summary

The convergence of American evidence — from Kinsey's original interviews through the massive BBC sample to the Ipsos panel — paints a consistent picture: between 19% and 26% of U.S. adults reported some degree of non-exclusive heterosexual attraction, depending on the survey instrument and sample. The narrower "significant same-sex attraction" composite (excluding those who were merely "mostly heterosexual") placed the figure at approximately 13% in the Ipsos data.

By the standards of early 21st-century social science, these were large numbers — far exceeding the single-digit percentages that many Americans at the time believed to be the total of non-heterosexual experience. The data revealed that the Kinsey continuum was not merely theoretical: it described a measurable reality in which roughly one-fifth to one-quarter of the American population occupied some position other than the exclusively heterosexual endpoint.

Section 2: 🌍 Global Overview — What the World Data Reveals

The Challenge of a Single Global Number

Historical records from the early 21st century reveal that one of the most frequently searched questions on the primitive Internet of that era was some variation of: "What percentage of the world is not straight?" The question was natural enough. The answer, however, was more complex than the searchers imagined.

The two largest cross-national datasets — the 2005 BBC Internet Survey (191,088 respondents across 28 nations) and the 2021 Ipsos LGBT+ Pride Survey (19,069 respondents across 27 countries) — both warned against computing a naïve pooled world percentage. As the original evidence synthesis noted: "Such a number would be falsely precise."³ ⁴

Why? Because measured distributions depended materially on: - Whether a survey asked about attraction, behavior, identity, or interviewer-rated history - The age and cohort composition of the sample - Privacy and disclosure conditions (including legal risk in some countries) - Sample design (probability vs. online panel vs. self-selected) - Cultural familiarity with Western sexual-orientation categories

Despite these caveats, the data does allow for carefully framed global approximations.

The Global Numbers: What We Can Defensibly State

Ipsos 2021: 27-Country Average

Across all 27 countries surveyed by Ipsos, the unweighted country-average distribution was:³

Calculated global-country-average of adults not 100% heterosexual: approximately 24%

This means that across 27 nations on six continents, roughly one in four adults reported some degree of attraction that was not exclusively directed toward the opposite sex.

The narrower "significant same-sex attraction" composite (equal + mostly same + only same) averaged approximately 11% across countries — essentially identical for men and women at the global level, though the internal category mix differed by sex.

BBC 2005: 28-Nation Attraction Data

The BBC dataset, while older and self-selected, produced strikingly similar global patterns:⁴

Calculated 28-nation average of respondents with moderate or predominant same-sex attraction: approximately 24%

The convergence between the Ipsos (~24%) and BBC (~24%) global averages — despite using different instruments, samples, timeframes, and country sets — is noteworthy. While neither figure should be treated as a precise world population estimate, the consistency suggests that the true global proportion of adults experiencing some degree of non-exclusive heterosexual attraction likely fell in the range of 20–30% during the early 21st century.

The Attraction-Identity Gap: A Universal Pattern

One of the most robust findings across the global evidence was the systematic gap between attraction and identity. In virtually every country studied, the percentage of people reporting some same-sex attraction exceeded the percentage who identified as bisexual, gay, or lesbian.⁴

This gap was not evidence of deception. Attraction and identity measured fundamentally different constructs — one experiential, the other social and psychological. A person could experience fleeting or moderate same-sex attraction while identifying as heterosexual, and this was neither contradictory nor dishonest. The global data simply revealed that categorical identity labels compressed a far richer continuum of human experience.

The gap was consistently larger among women than men across nations, consistent with the scientific literature on multidimensionality and what some researchers termed greater female "erotic plasticity."¹⁰ ¹¹

Country Variation: From 12% to 33%

The range across individual countries was substantial:

• Lowest reported non-exclusive heterosexuality (Ipsos): Russia and Hungary at approximately 12%
• Highest reported non-exclusive heterosexuality (BBC): Austria at approximately 33%
• Highest in Ipsos: China, France, India, and Mexico at approximately 30%

However, the countries reporting the lowest figures often had elevated nonresponse rates ("don't know" / "prefer not to say"), ranging up to 25% in Malaysia and 14% in India. As the original researchers noted, low disclosed minority attraction could not safely be equated with low underlying prevalence in environments where disclosure carried social or legal cost.³

The Generational Shift

The age gradient was one of the strongest and most consistent patterns across all countries:³

Later Ipsos surveys (2023, 2024) confirmed the trend, finding that 18% of Gen Z identified as LGBT+ compared to 4% of Baby Boomers across 30 countries.¹²

Sex and Gender Patterns

At the global level, the composite "not exclusively heterosexual" measure was approximately equal for men and women at 11% (using the narrower same/equal-attraction measure). However, the internal composition differed:³ ⁴

• Men were somewhat more likely to report only same-sex attraction
• Women were somewhat more likely to report equal attraction to both sexes and were less likely to report only opposite-sex attraction
• In the BBC data, 27.3% of women versus 10.2% of men reported moderate same-sex attraction — suggesting a broader intermediate-attraction distribution among women rather than simply a higher exclusively homosexual endpoint

Global Summary

The early 21st-century global data on sexual orientation revealed several conclusions that would have startled many contemporaries:

1. Approximately 24% of adults across surveyed nations reported some degree of non-exclusive heterosexual attraction — roughly one in four people
2. The continuum was real and measurable, not merely theoretical — every Kinsey position from 0 to 6 was populated in every country studied
3. Younger generations reported substantially higher rates of non-exclusive sexuality, suggesting a combination of genuine difference and increased willingness to disclose
4. Country variation was large (12–33%) but was inseparable from disclosure conditions, legal environments, and survey methodology
5. There was no single "world Kinsey distribution" — the most truthful global result was a structured atlas of comparable distributions plus explicit uncertainty

Section 3: 🗺️ Country-by-Country Analysis

The following profiles cover all 39 countries represented in at least one of the two principal cross-national datasets. Each entry reports the available attraction-continuum data, the calculated percentage of respondents who were not 100% heterosexual, and relevant contextual notes.

Data sources key: - Ipsos 2021: Five-category attraction continuum from the Ipsos LGBT+ Pride 2021 Global Survey³ - BBC 2005: Three-band same-sex attraction measure from the BBC Internet Survey, reanalyzed by Rahman et al.⁴

Argentina

Not 100% heterosexual: ~28% (Ipsos 2021)

Historical records from early 21st-century Argentina reveal a population whose sexual attraction spectrum was more diverse than the predominantly Catholic cultural framework of the era might have suggested. Argentina had legalized same-sex marriage in 2010, making it the first country in Latin America to do so.

Ipsos 2021 Attraction Data:

The 18% reporting "mostly opposite-sex" attraction was among the higher rates in the Ipsos dataset, indicating a substantial population that was predominantly heterosexual but acknowledged some same-sex interest. The significant same-sex attraction composite (equal + mostly same + only same) was approximately 10%.

Australia

Not 100% heterosexual: ~24% (Ipsos) / ~26% (BBC)

Australia consistently appeared among the countries with higher measured continuum diversity in early 21st-century surveys. The nation legalized same-sex marriage in 2017 following a national postal survey in which 61.6% voted in favor.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 8,003):

Identity: 90% heterosexual, 6% bisexual, 4% gay/lesbian. The attraction-identity gap was approximately 16 percentage points.

Australia's notably high 9% exclusively same-sex attracted in the Ipsos data was the highest in the entire 27-country survey for that category.

Austria

Not 100% heterosexual: ~33% (BBC 2005)

Austria's BBC data (N = 398) produced one of the highest non-exclusive heterosexuality measurements in the entire 28-nation dataset — though the relatively small sample size warrants caution.

BBC 2005 Data:

Identity: 88% heterosexual, 9% bisexual, 3% gay/lesbian. The attraction-identity gap was approximately 21 percentage points — one of the largest measured.

The 26% moderate same-sex attraction figure was the highest of any country in the BBC dataset. Austria was not included in the Ipsos 2021 survey, so no modern comparison is available.

Belgium

Not 100% heterosexual: ~28% (Ipsos) / ~21% (BBC)

Belgium, which had legalized same-sex marriage in 2003, was among the countries recording the highest continuum diversity in the Ipsos survey.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 1,322):

Identity: 91% heterosexual, 6% bisexual, 4% gay/lesbian. Attraction-identity gap: approximately 11 percentage points.

The significant same-sex attraction composite was approximately 16% in Ipsos — tied with Australia, Brazil, and India for the highest in that survey.

Brazil

Not 100% heterosexual: ~28% (Ipsos 2021)

Brazil's data from the early 21st century reflected a society of fascinating contradictions — one of the world's most socially vibrant LGBTQ+ cultures coexisting alongside significant religious conservatism. Same-sex marriage was legalized nationally in 2013.

Ipsos 2021 Attraction Data:

The 7% equal attraction rate was the second-highest in the Ipsos dataset (after India's 9%), suggesting a notably strong bisexual-spectrum presence. The significant same-sex attraction composite was approximately 16%.

Bulgaria

Not 100% heterosexual: ~26% (BBC 2005)

Bulgaria's BBC data (N = 381) revealed a pattern common across Eastern European nations — a substantial attraction-identity gap in a social environment that was less accepting of open LGBTQ+ expression.

BBC 2005 Data:

Identity: 93% heterosexual, 6% bisexual, 2% gay/lesbian. The attraction-identity gap was approximately 18 percentage points.

That gap — the difference between what people felt and what they called themselves — was among the largest measured, suggesting that categorical identity labels captured only a fraction of the experienced spectrum.

Canada

Not 100% heterosexual: ~25% (Ipsos) / ~26% (BBC)

Canada, which legalized same-sex marriage in 2005, produced remarkably consistent results across the two surveys — the data from 2005 and 2021 aligned within approximately one percentage point on broad non-exclusive attraction constructs.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 11,673):

Identity: 90% heterosexual, 6% bisexual, 4% gay/lesbian. Attraction-identity gap: approximately 16 percentage points.

The Canadian BBC sample (N = 11,673) was the second-largest national subsample after the UK, lending additional statistical weight to the findings. The significant same-sex attraction composite was approximately 14% in Ipsos.

Chile

Not 100% heterosexual: ~24% (Ipsos 2021)

Chile's data placed it in the middle of the Latin American range, with same-sex marriage legalized in 2022.

Ipsos 2021 Attraction Data:

The significant same-sex attraction composite was approximately 12%.

China

Not 100% heterosexual: ~30% (Ipsos 2021)

China's Ipsos data was striking — and complicated. The headline figure of approximately 30% was among the highest in the entire survey, driven substantially by a large 19% reporting "mostly opposite-sex attraction" and an unusually high 6% reporting equal attraction.

Ipsos 2021 Attraction Data:

The Ipsos methodology note cautioned that emerging-market online samples, including China's, tended to be more urban, educated, and affluent than the general population — factors that could influence both experienced attraction and willingness to disclose. The significant same-sex attraction composite was approximately 11%.

Colombia

Not 100% heterosexual: ~26% (Ipsos 2021)

Colombia presented a distinctive pattern — a relatively lower "significant same-sex attraction" composite alongside a high "mostly opposite-sex" category.

Ipsos 2021 Attraction Data:

The 19% mostly-opposite figure was notably high, while the significant same-sex composite (equal + mostly same + only same) was only approximately 7% — one of the lowest in the Ipsos dataset. Cross-national disclosure conditions were cited as a credible alternative explanation to a purely biological account of this lower figure.

Denmark

Not 100% heterosexual: ~24% (BBC 2005)

Denmark, historically one of the world's most progressive nations on LGBTQ+ rights (it introduced registered partnerships in 1989), appeared only in the BBC dataset.

BBC 2005 Data (N = 779):

Identity: 93% heterosexual, 4% bisexual, 3% gay/lesbian. Attraction-identity gap: approximately 17 percentage points.

Finland

Not 100% heterosexual: ~29% (BBC 2005)

Finland's BBC data (N = 1,628) placed it among the higher end of measured non-exclusive heterosexuality.

BBC 2005 Data:

Identity: 86% heterosexual, 11% bisexual, 3% gay/lesbian. Attraction-identity gap: approximately 15 percentage points.

Finland's 11% bisexual identification was among the highest in the BBC dataset, and its 22% moderate same-sex attraction was also notable.

France

Not 100% heterosexual: ~30% (Ipsos) / ~26% (BBC)

France, which legalized same-sex marriage in 2013, produced one of the highest non-exclusive heterosexuality measures in the Ipsos survey — driven by a combination of high "mostly opposite-sex" attraction (17%) and strong same-sex attraction figures.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 965):

Identity: 87% heterosexual, 7% bisexual, 6% gay/lesbian. Attraction-identity gap: approximately 13 percentage points.

France's 8% exclusively same-sex attracted was the second-highest in the Ipsos dataset (after Australia's 9%). The significant same-sex composite was approximately 13%.

Germany

Not 100% heterosexual: ~24% (Ipsos) / ~29% (BBC)

Germany's data was notable for having the highest "don't know / prefer not to say" rate among Western European nations at 11%, complicating direct prevalence inference.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 1,484):

Identity: 87% heterosexual, 8% bisexual, 5% gay/lesbian. Attraction-identity gap: approximately 16 percentage points.

The significant same-sex composite was approximately 11% in Ipsos. The substantial gap between the BBC and Ipsos figures (~5 percentage points on broad constructs) illustrates why cross-survey time-trend claims required great caution.

Greece

Not 100% heterosexual: ~16% (BBC 2005)

Greece's BBC data (N = 843) yielded the lowest measured non-exclusive heterosexuality in the entire BBC 28-nation dataset.

BBC 2005 Data:

Identity: 94% heterosexual, 4% bisexual, 3% gay/lesbian. Attraction-identity gap: approximately 9 percentage points — the smallest in the BBC dataset.

Hungary

Not 100% heterosexual: ~12% (Ipsos 2021)

Hungary recorded the lowest non-exclusive heterosexuality measure (tied with Russia) in the entire Ipsos 27-country survey. This occurred in a political environment that had been increasingly restrictive toward LGBTQ+ rights.

Ipsos 2021 Attraction Data:

The researchers noted that the lower observed continuum share was "statistically conspicuous, yet cross-national disclosure conditions and category interpretation are credible alternative explanations." The significant same-sex composite was approximately 7%.

India

Not 100% heterosexual: ~30% (Ipsos) / ~11% (BBC)

India presented one of the most complex pictures in the global data. Its Ipsos figure was among the highest at approximately 30%, but this coincided with the highest nonresponse rate in the dataset at 14% (5% "don't know" + 9% "prefer not to say"). The 2018 Supreme Court ruling decriminalizing homosexuality (Section 377) occurred between the two surveys.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 3,193):

Identity: 93% heterosexual, 6% bisexual, 1% gay/lesbian. Attraction-identity gap: approximately 4 percentage points — the smallest in the BBC dataset along with Greece.

The 19 percentage-point difference between the two surveys' broad non-exclusive attraction figures was the largest for any country with dual coverage — reflecting the combined effects of instrument differences, the Section 377 ruling, sample composition, and potentially genuine change in disclosure norms. India's 9% equal attraction was the highest for any Ipsos country.

Ireland

Not 100% heterosexual: ~19% (BBC 2005)

Ireland's BBC data (N = 488), collected before the nation's historic 2015 marriage equality referendum (which passed with 62%), showed substantial attraction diversity.

BBC 2005 Data:

Identity: 91% heterosexual, 5% bisexual, 3% gay/lesbian. Attraction-identity gap: approximately 11 percentage points.

Italy

Not 100% heterosexual: ~23% (Ipsos) / ~25% (BBC)

Italy, which introduced civil unions (but not marriage) for same-sex couples in 2016, showed moderate continuum diversity.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 443):

Identity: 87% heterosexual, 8% bisexual, 5% gay/lesbian. Attraction-identity gap: approximately 12 percentage points.

The significant same-sex composite was approximately 9% in Ipsos.

Japan

Not 100% heterosexual: ~17% (Ipsos) / ~27% (BBC)

Japan presented one of the starkest between-survey contrasts in the global data — a 10 percentage-point difference between the Ipsos and BBC measures. The country also had one of the highest nonresponse rates at 13% in Ipsos (9% "don't know" + 4% "prefer not to say").

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 474):

Identity: 92% heterosexual, 5% bisexual, 4% gay/lesbian. Attraction-identity gap: approximately 18 percentage points.

The researchers noted that the high nonresponse "materially widens uncertainty: low disclosed minority attraction cannot safely be equated with low underlying prevalence." The significant same-sex composite was approximately 6% in Ipsos — one of the lowest measured.

Malaysia

Not 100% heterosexual: ~19% (Ipsos) / ~28% (BBC)

Malaysia recorded the highest nonresponse rate in the entire Ipsos dataset at 25% (15% "don't know" + 10% "prefer not to say"), reflecting a social and legal environment where same-sex relations remained criminalized.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 775):

Identity: 90% heterosexual, 6% bisexual, 4% gay/lesbian. Attraction-identity gap: approximately 18 percentage points.

The massive nonresponse rate in the Ipsos data means the true proportion of Malaysians with non-exclusive heterosexual attraction was likely substantially higher than the measured 19%. The significant same-sex composite was approximately 12% in Ipsos.

Mexico

Not 100% heterosexual: ~30% (Ipsos 2021)

Mexico's Ipsos figure placed it among the highest in the dataset, driven by a substantial 18% reporting "mostly opposite-sex attraction".

Ipsos 2021 Attraction Data:

The significant same-sex composite was approximately 12%.

Netherlands

Not 100% heterosexual: ~24% (Ipsos) / ~29% (BBC)

The Netherlands, the first country in the world to legalize same-sex marriage (2001), produced some of the most interesting data in both surveys.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 2,108):

Identity: 85% heterosexual, 7% bisexual, 8% gay/lesbian. Attraction-identity gap: approximately 14 percentage points.

The Dutch BBC data was notable for having the highest exclusively homosexual identification at 8% — double or triple the rate in many other nations. The significant same-sex composite was approximately 13% in Ipsos.

New Zealand

Not 100% heterosexual: ~26% (BBC 2005)

New Zealand's BBC data (N = 1,990) showed a pattern similar to its neighbor Australia.

BBC 2005 Data:

Identity: 90% heterosexual, 6% bisexual, 4% gay/lesbian. Attraction-identity gap: approximately 16 percentage points.

Norway

Not 100% heterosexual: ~20% (BBC 2005)

BBC 2005 Data (N = 565):

Identity: 92% heterosexual, 6% bisexual, 2% gay/lesbian. Attraction-identity gap: approximately 12 percentage points.

Peru

Not 100% heterosexual: ~24% (Ipsos 2021)

Peru's data showed a pattern similar to Colombia — a relatively low significant same-sex composite alongside a high "mostly opposite-sex" category.

Ipsos 2021 Attraction Data:

The significant same-sex composite was approximately 5% — tied with Russia for the lowest in the Ipsos dataset. Cross-national disclosure conditions were noted as a credible alternative explanation.

Philippines

Not 100% heterosexual: ~31% (BBC 2005)

The Philippines' BBC data (N = 407) produced the highest non-exclusive heterosexuality measure in the entire 28-nation BBC dataset.

BBC 2005 Data:

Identity: 86% heterosexual, 7% bisexual, 7% gay/lesbian. Attraction-identity gap: approximately 17 percentage points.

The 11% predominant same-sex attraction was the highest for any country in the BBC dataset. Filipino culture of the era had a complex relationship with gender and sexuality, with a long-standing tradition of the bakla and other indigenous gender-variant identities.

Poland

Not 100% heterosexual: ~18% (Ipsos) / ~30% (BBC)

Poland showed one of the largest between-survey discrepancies at 12 percentage points, occurring in a political environment that had become increasingly hostile to LGBTQ+ rights during the 2020s.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 441):

Identity: 91% heterosexual, 6% bisexual, 3% gay/lesbian. Attraction-identity gap: approximately 21 percentage points — tied with Austria for the largest in the BBC dataset.

The significant same-sex composite dropped from approximately 30% (BBC) to 9% (Ipsos) — a magnitude that likely reflected changing disclosure environments alongside instrument and sample differences.

Romania

Not 100% heterosexual: ~19% (BBC 2005)

BBC 2005 Data (N = 359):

Identity: 94% heterosexual, 4% bisexual, 3% gay/lesbian. Attraction-identity gap: approximately 12 percentage points.

Russia

Not 100% heterosexual: ~12% (Ipsos 2021)

Russia recorded the lowest non-exclusive heterosexuality measure (tied with Hungary) in the Ipsos survey. This occurred under the "gay propaganda" law enacted in 2013, which criminalized positive portrayals of non-heterosexual relationships to minors and was later expanded.

Ipsos 2021 Attraction Data:

The significant same-sex composite was approximately 4% — the lowest in the entire dataset. However, as with all countries showing low figures, the researchers emphasized that "cross-national disclosure conditions and category interpretation are credible alternative explanations to a purely population-biological account."

Singapore

Not 100% heterosexual: ~28% (BBC 2005)

Singapore's BBC data (N = 1,748) was collected while Section 377A (criminalizing male homosexual acts) was still in effect. The law was repealed in 2022.

BBC 2005 Data:

Identity: 90% heterosexual, 6% bisexual, 4% gay/lesbian. Attraction-identity gap: approximately 18 percentage points.

The 22% moderate same-sex attraction was among the highest in the dataset, notable given the legal climate.

South Africa

Not 100% heterosexual: ~22% (Ipsos 2021)

South Africa, which legalized same-sex marriage in its 2006 Civil Union Act (the first African country to do so), showed moderate continuum diversity.

Ipsos 2021 Attraction Data:

The significant same-sex composite was approximately 11%.

South Korea

Not 100% heterosexual: ~28% (Ipsos 2021)

South Korea's data was notable for having the highest "equal attraction" figure alongside a very high "mostly opposite-sex" rate, but one of the lowest "only same-sex" figures.

Ipsos 2021 Attraction Data:

The 19% mostly-opposite and 7% equal attraction rates were among the highest in the dataset, while the 1% only-same-sex was the lowest (tied with Russia). The significant same-sex composite was approximately 9%. The pattern suggests a population with substantial intermediate-spectrum diversity alongside very low exclusively-homosexual self-reporting — a profile consistent with cultural pressure against identifying with exclusively same-sex endpoints.

Spain

Not 100% heterosexual: ~28% (Ipsos) / ~27% (BBC)

Spain, which legalized same-sex marriage in 2005, showed remarkable consistency between the two surveys — within approximately one percentage point on broad non-exclusive attraction constructs.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 817):

Identity: 91% heterosexual, 4% bisexual, 6% gay/lesbian. Attraction-identity gap: approximately 17 percentage points.

The significant same-sex composite was approximately 10% in Ipsos.

Sweden

Not 100% heterosexual: ~25% (Ipsos) / ~21% (BBC)

Sweden, which legalized same-sex marriage in 2009, showed moderate continuum diversity consistent with its Nordic neighbors.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 1,232):

Identity: 92% heterosexual, 6% bisexual, 2% gay/lesbian. Attraction-identity gap: approximately 13 percentage points.

The significant same-sex composite was approximately 12% in Ipsos.

Switzerland

Not 100% heterosexual: ~20% (BBC 2005)

BBC 2005 Data (N = 557):

Identity: 91% heterosexual, 6% bisexual, 3% gay/lesbian. Attraction-identity gap: approximately 11 percentage points.

Turkey

Not 100% heterosexual: ~18% (Ipsos) / ~20% (BBC)

Turkey's data, collected in a social environment that was becoming increasingly restrictive toward public LGBTQ+ expression, showed a moderately lower continuum share.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 1,294):

Identity: 96% heterosexual, 3% bisexual, 1% gay/lesbian. Attraction-identity gap: approximately 16 percentage points.

Turkey's 96% heterosexual identification was the highest in the entire BBC dataset, while its attraction data told a substantially different story. The significant same-sex composite was approximately 7% in Ipsos.

United Kingdom

Not 100% heterosexual: ~23% (Ipsos) / ~21% (BBC)

The United Kingdom hosted the largest single national subsample in the entire BBC dataset — 95,793 respondents — lending the UK data particular statistical weight. Same-sex marriage was legalized in England and Wales in 2014, Scotland in 2014, and Northern Ireland in 2020.

Ipsos 2021 Attraction Data:

BBC 2005 Data (N = 95,793):

Identity: 91% heterosexual, 5% bisexual, 4% gay/lesbian. Attraction-identity gap: approximately 12 percentage points.

The UK's 9% exclusively same-sex attracted (Ipsos) tied with Australia and Belgium for the highest in the survey. The significant same-sex composite was approximately 15% in Ipsos.

United States

See Section 1 above for the comprehensive U.S. analysis.

Not 100% heterosexual: ~19% (Ipsos) / ~26% (BBC)

Quick reference — Ipsos 2021: 77% only opposite, 6% mostly opposite, 5% equal, 3% mostly same, 5% only same, 5% DK/refuse. BBC 2005 (N = 50,928): 73% low same-sex attraction, 18% moderate, 8% predominant. The significant same-sex composite was approximately 13% in Ipsos.

Summary Statistics: The Complete Picture

Ipsos 2021 — All 27 Countries Ranked by Not-100%-Heterosexual Rate

Ipsos 27-country average: ~24% not exclusively heterosexual; ~11% significant same-sex attraction composite

BBC 2005 — All 28 Countries Ranked by Not-100%-Heterosexual Rate

BBC 28-country average: ~24% with moderate or predominant same-sex attraction

Key Takeaways

1. The global average across both major surveys was approximately 24% — roughly one in four adults reported some degree of non-exclusive heterosexual attraction
2. The United States fell slightly below the global average at 19–26%, depending on the survey instrument
3. Country variation was substantial (12–33%) but was inseparable from disclosure conditions, legal environments, and survey methodology
4. The attraction-identity gap was universal — in every country, more people experienced same-sex attraction than identified with a sexual-minority label
5. Younger generations consistently reported higher rates of non-exclusive sexuality, with Gen Z at 18% versus Baby Boomers at 7%
6. Nonresponse rates were informative — the countries with the lowest reported same-sex attraction often had the highest refusal rates
7. No single "world Kinsey distribution" exists — the most truthful global result is a structured atlas of comparable distributions plus explicit uncertainty

About the Kinsey Scale

The Kinsey Scale, developed by Dr. Alfred C. Kinsey and colleagues at Indiana University in the 1940s and 1950s, rates human sexual orientation on a seven-point continuum:¹

Modern sexuality research has moved beyond the single Kinsey axis to incorporate multidimensional measures including the Klein Sexual Orientation Grid, which addresses attraction, behavior, fantasy, emotional preference, social preference, self-identification, and lifestyle across past, present, and ideal timeframes. However, the Kinsey Scale remains one of the most widely recognized and frequently cited frameworks for understanding that human sexual orientation exists on a continuum rather than as a rigid binary.

📚 Bibliography & Citations

Primary Sources

1. Kinsey Institute, Indiana University. "The Kinsey Scale." Accessed August 24, 2026. https://www.kinseyinstitute.org/research/publications/kinsey-scale.html.

2. Kinsey, Alfred C., Wardell B. Pomeroy, and Clyde E. Martin. Sexual Behavior in the Human Male. Philadelphia: W. B. Saunders, 1948. Kinsey, Alfred C., et al. Sexual Behavior in the Human Female. Philadelphia: W. B. Saunders, 1953.

3. Ipsos. LGBT+ Pride 2021 Global Survey. June 2021. Especially pp. 4, 7–9. https://www.ipsos.com/sites/default/files/ct/news/documents/2021-06/lgbt-pride-2021-global-survey-ipsos.pdf.

4. Rahman, Qazi, Yin Xu, Richard A. Lippa, and Paul L. Vasey. "Prevalence of Sexual Orientation Across 28 Nations and Its Association with Gender Equality, Economic Development, and Individualism." Archives of Sexual Behavior 49 (2020): 595–606. https://doi.org/10.1007/s10508-019-01590-0.

Additional Peer-Reviewed Sources

5. Epstein, Robert, Paul McKinney, Shannon Fox, and Carlos Garcia. "Support for a Fluid-Continuum Model of Sexual Orientation: A Large-Scale Internet Study." Journal of Homosexuality 59, no. 10 (2012): 1356–1381. https://doi.org/10.1080/00918369.2012.724634.

6. Epstein, Robert, Hongyu Wang, and Vanessa R. Zankich. "Is Everyone a Mix of Straight and Gay? A Social Pressure Theory of Sexual Orientation, with Supporting Data from a Large Global Sample." Frontiers in Psychology 14 (2023): 1187377. https://doi.org/10.3389/fpsyg.2023.1187377.

7. Nazareth, Irwin, et al. "Problems with Sexual Function in People Attending London General Practitioners: Cross Sectional Study." BMJ 327 (2003): 423.

8. Sierra, Juan Carlos, et al. "Measurement Invariance across Sexual Orientation for Measures of Sexual Attitudes." International Journal of Environmental Research and Public Health 20, no. 3 (2023): 1820. https://doi.org/10.3390/ijerph20031820.

9. Jabbour, Jeremy, et al. "Robust Evidence for Bisexual Orientation among Men." Proceedings of the National Academy of Sciences 117, no. 31 (2020): 18369–18377. https://doi.org/10.1073/pnas.2003631117.

10. Bailey, J. Michael, Paul L. Vasey, Lisa M. Diamond, S. Marc Breedlove, Eric Vilain, and Marc Epprecht. "Sexual Orientation, Controversy, and Science." Psychological Science in the Public Interest 17, no. 2 (2016): 45–101. https://doi.org/10.1177/1529100616637616.

11. Diamond, Lisa M. "Female Bisexuality from Adolescence to Adulthood: Results from a 10-Year Longitudinal Study." Developmental Psychology 44, no. 1 (2008): 5–14. https://doi.org/10.1037/0012-1649.44.1.5.

12. Ipsos. "Pride Month 2023: 9% of Adults Identify as LGBT+." June 1, 2023. Ipsos. LGBT+ Pride 2024. May 2024. "Gen Zers Most Likely to Identify as LGBT+." May 27, 2024.

Source Data Notes

• The Ipsos 2021 survey covered 27 countries with approximately 19,069 respondents total, using online panels calibrated to national demographics (though emerging-market samples skewed urban/educated/affluent).
• The BBC 2005 survey encompassed 191,088 respondents across 28 nations but was self-selected and English-language, introducing potential biases.
• The original Kinsey studies (1948/1953) involved approximately 11,240 participants but used non-probability sampling.
• All country-level percentages reflect survey-reported figures and may be influenced by nonresponse, social desirability, legal environment, translation, and category familiarity.
• "Not 100% heterosexual" calculations include all respondents who selected any category other than "only attracted to the opposite sex" (Ipsos) or who scored above "low same-sex attraction" (BBC), excluding nonrespondents.

This article is based on the research monograph "Human Sexual Orientation on a Continuum: A Global Evidence Synthesis of Kinsey-Scale and Kinsey-Compatible Distributions," with evidence current through August 2026. All statistics are drawn directly from peer-reviewed and institutional survey sources cited above. No figures have been fabricated, extrapolated, or editorially adjusted.

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