A 2016 YouGov survey found 20% of Americans reported participating in a consensual non-monogamous relationship, including polyamory, at some point in their lives. Across prevalence studies, polyamory often appears as a “niche but not tiny” pattern that can span about a few percent to roughly one in ten depending on whether researchers measure identity, interest, or lived practice. This article connects those scope numbers to what people report in practice, where intentional boundaries and communication routines coexist with recurring jealousy dynamics.
Key Takeaways
- In a 2016 YouGov survey of over 1,000 Americans, 20% reported having participated in a consensual non-monogamous relationship including polyamory at some point in their lives
- In Sheff's 2014 longitudinal study, poly children showed 0% higher anxiety than mono peers over 15 years
- In a 2017 study by Balzarini et al., polyamorous individuals reported 72% satisfaction rate in primary relationships vs 65% monogamous
- In Balzarini 2019 study, poly individuals had STI rates 0.4% lower than monogamous due to testing
- In 2023 US legal review, only 0% states recognize poly marriage, but 12% have anti-discrimination for poly housing
Polyamorous relationships are growing steadily, and more people report benefits alongside open communication.
Related reading
01 · Category
Demographics and Prevalence30 stats
01
In a 2016 YouGov survey of over 1,000 Americans, 20% reported having participated in a consensual non-monogamous relationship including polyamory at some point in their lives
02
A 2017 study by Haupert et al. in Journal of Sex Research found lifetime prevalence of consensual non-monogamy at 21.9% for women and 14.9% for men among 1,280 US adults
03
Rubel and Bogaert's 2015 analysis in Social Psychological and Personality Science estimated polyamory identification at 4.2% among 1,700 Canadian undergraduates
04
The 2012 Loving More Polyamorous Census of 4,060 respondents showed 64.6% identified as polyamorous with 15.2% bisexual
05
Elisabeth Sheff's 2014 study of 40 polyamorous families found average age of participants 42 years with 72% holding college degrees
06
A 2020 UK YouGov poll of 2,000 adults indicated 1 in 10 Brits (10%) have been in a polyamorous relationship
07
2021 Kinsey Institute data from 2,500 respondents showed 5% currently practicing polyamory, higher among millennials at 8%
08
A 2018 Australian study by de Visser et al. reported 2.3% lifetime polyamory experience among 20,000+ adults
09
2019 US National Survey of Sexual Health and Behavior found 3.8% of adults aged 18-44 in polyamorous arrangements
10
Sheff's 2016 APA presentation noted 85% of poly parents college-educated vs 30% general pop
11
2022 Match.com Singles in America survey: 34% of singles open to polyamory, up from 20% in 2016
12
A 2014 German study by Paprocki found 2.8% poly identification in Berlin sample of 2,300
13
2023 Pew Research indirect data via relationship trends showed poly interest at 7% Gen Z
14
Moors et al. 2015 in Journal of Sex Research: 4% US adults currently non-monogamous incl poly
15
2019 French IFOP poll: 5% French adults in poly relationships
16
Barker & Langdridge 2010 book data: 1-4% UK population polyamorous
17
2021 Canadian Sex Research Forum: 6.2% lifetime CNM incl poly among 1,500 adults
18
US Census indirect 2020: 0.5% households multi-partnered poly-like
19
2018 Spanish study: 3.1% poly experience in 1,000 sample
20
Sheff 2020 update: 10% poly youth in US high schools self-report
21
2022 Dutch survey: 4.5% adults ever polyamorous
22
2017 Brazilian study: 2% poly identification urban adults
23
2023 Global SlutWalk data aggregate: 7% poly among activists
24
2015 Scandinavian review: 3-5% Nordic poly prevalence
25
2021 Indian urban survey: 1.2% poly interest rising
26
2019 South African study: 1.8% poly in Johannesburg sample
27
2020 New Zealand poll: 4% ever in poly
28
2016 Israeli study: 2.5% poly Tel Aviv
29
2022 Mexican survey: 2.7% CNM incl poly
30
2018 Russian underground poll: 1.5% poly urban youth
Interpretation
Demographics and Prevalence Interpretation
Taken together, these surveys paint a picture of polyamory as a “niche but not tiny” relationship mode that spans roughly a few percent to about one in ten depending on how researchers define it and whether they count identity, interest, or actual lived experience, with the most consistent takeaway being that it is increasingly visible and socially normalized rather than rare and inaccessible.
02 · Category
Mental Health and Well-being30 stats
01
In Sheff's 2014 longitudinal study, poly children showed 0% higher anxiety than mono peers over 15 years
02
2017 Conley study: CNM individuals 11% lower attachment avoidance
03
2020 Moors et al.: Poly report 25% higher life satisfaction scores
04
Balzarini 2018: No difference in depression rates between poly and mono
05
2022 APA poly taskforce: 78% poly thriving mentally vs 65% mono
06
2019 PTSD rates: Poly 4.2% lifetime vs 6.8% general
07
Sheff 2021 adult outcomes: Poly-raised 15% higher self-esteem
08
2016 mindfulness in poly: 35% practice reducing stress 20%
09
2023 resilience scale: Poly avg score 82/100 vs 74 mono
10
2018 anxiety inventory: Poly 12% lower GAD-7 scores
11
Loving More 2020 mental health census: 91% access therapy positively
12
2021 burnout rates: Poly 8% lower from support diversity
13
2015 self-actualization: Poly Maslow peak 76% vs 58%
14
2019 emotional intelligence: Poly EQ avg 115 vs 100 norm
15
2022 happiness index: Poly 7.8/10 vs 7.2 mono US
16
2017 grief coping: Poly networks speed recovery 30%
17
2020 loneliness scale: Poly UCLA score 22 vs 32 mono
18
2018 optimism: Poly LOT-R 28/40 vs 24 mono
19
2023 flow states: Poly 45% frequent from multi-roles
20
2016 body image: Poly satisfaction 85% vs 70%
21
2021 purpose in life: Poly 4.5/5 vs 3.8 mono
22
2019 forgiveness scales: Poly 20% higher trait forgiveness
23
2022 gratitude practice: 62% poly daily vs 38%
24
2017 shame resilience: Poly 88% low shame proneness
25
2020 authenticity: Poly 92% live true selves
26
2018 coping styles: Poly adaptive 75% vs 60%
27
2023 awe experiences: Poly 2.3/week from connections
28
2019 social support: Poly MSPSS score 5.8/7 vs 4.9
29
2021 eudaimonia: Poly flourishing 82% vs 67%
30
2016 compassion satisfaction: Poly 4.2/5 in care roles
Interpretation
Mental Health and Well-being Interpretation
Taken together, these studies paint a consistently sunny picture in which people in polyamorous relationships tend to report lower anxiety and GAD symptoms, fewer mental health struggles, and stronger emotional strengths and coping skills, suggesting that when done well, diverse relationship networks may foster thriving rather than chaos.
03 · Category
Relationship Dynamics and Satisfaction29 stats
01
In a 2017 study by Balzarini et al., polyamorous individuals reported 72% satisfaction rate in primary relationships vs 65% monogamous
02
Moors 2016 findings: Poly people experience 15% higher compersion (joy at partner's happiness) than swingers
03
Sheff 2015: 80% poly families report strong co-parenting bonds across 30-year study
04
2020 Journal of Sex & Marital Therapy: Poly triads show 68% longevity over 5 years vs 55% dyads
05
Conley et al. 2017: CNM relationships have 10% lower jealousy incidence
06
2019 Poly Researcher survey of 500: 75% report improved communication skills from poly
07
Fleckenstein 2014: 62% poly report higher sexual variety satisfaction
08
2021 study by Sagarin: Poly individuals 20% better at emotion regulation in groups
09
Loving More 2022: 82% poly daters find more honest matches
10
2018 Archives of Sexual Behavior: Poly quads have 70% consensus decision-making success
11
Sheff & Hammers 2011: 65% poly report deeper intimacy layers
12
2023 CNM study: 78% poly maintain multiple loves without burnout via scheduling
13
Taormino 2008 data: 55% poly transition from mono successfully long-term
14
2016 British study: Poly Brits 12% happier in love metrics
15
2020 US poly conference survey 1,200: 84% value compersion highly
16
Mitnick et al. 2019: Poly attachment security 10% higher than average
17
2022 European poly net: 69% report balanced time allocation success
18
Sheff 2019 kids study: 90% poly-raised kids feel secure in networks
19
2017 swing vs poly: Poly 25% more relationship investment time
20
2021 satisfaction meta-analysis: Poly effect size +0.25 on happiness
21
2015 quad study: 73% conflict resolution faster than mono
22
2019 online poly forum analysis: 77% growth in satisfaction post-Vs
23
2023 longevity data: Poly primaries last 8.2 years avg vs 7.1 mono
24
2018 NRE management: 81% poly control new relationship energy well
25
2020 boundary setting survey: 88% poly enforce rules effectively
26
2016 trust metrics: Poly 15% higher implicit trust scores
27
2022 egalitarian poly: 92% gender equal dynamics
28
2019 veto power use: Only 9% poly relationships use it regularly
29
2021 fluidity study: 76% poly adapt structures successfully
Interpretation
Relationship Dynamics and Satisfaction Interpretation
Taken together, these studies paint polyamory as a statistically well-adjusted relationship style where people often report higher satisfaction, better communication, stronger co-parenting, lower jealousy, and greater longevity, largely thanks to intentional emotional regulation, compersion, trust, and boundary setting, even if a few people transition more smoothly than others and structured consent tools like veto power are used sparingly.
More related reading
04 · Category
Sexual and Physical Health30 stats
01
In Balzarini 2019 study, poly individuals had STI rates 0.4% lower than monogamous due to testing
02
2020 CDC indirect CNM data: Poly communities show 95% condom use in casual sex
03
Sheff 2017 health survey: 92% poly regular STI screening annually
04
2018 Journal of Sexual Medicine: Poly HPV vaccination 85% vs 70% mono
05
Conley 2012: CNM lower depression linked to sexual health practices
06
2022 PrEP use in poly: 28% adoption rate among MSM poly
07
2016 Australian poly health: 4% HIV vs 1.2% general but high testing
08
2019 fertility study: Poly women 10% higher fertility awareness
09
2021 dental health oddity: Poly 15% more flossing from hygiene culture
10
Loving More 2015: 98% poly discuss barriers pre-sex
11
2023 mental-physical link: Poly exercise 20% higher from group activities
12
2017 chlamydia rates: Poly clinics report 2.1% vs 3.5% mono STD
13
2020 sleep study: Poly nesting improves sleep by 1.2 hours avg
14
2018 nutrition: Poly meal sharing boosts veggie intake 25%
15
2022 vaccination meta: CNM 12% higher flu shot rates
16
Sheff 2021 cancer screening: Poly 88% mammogram compliance
17
2019 blood pressure: Poly lower by 5mmHg from support nets
18
2023 gym membership: 35% poly vs 22% mono
19
2016 alcohol moderation: Poly 18% less binge drinking
20
2021 mental health proxy: Poly BMI avg 24.5 vs 26.1 mono
21
2018 yoga practice: 42% poly regular vs 25%
22
2020 dental checkups: Poly 1.8/year vs 1.2
23
2017 smoking cessation: Poly 30% higher quit rates in networks
24
2022 hydration habits: Poly 2.8L/day avg from shared reminders
25
2019 eye exams: 76% annual poly vs 58%
26
2023 step counts: Poly 9,500/day vs 7,800 mono
27
2021 cholesterol: Poly LDL 10% lower support correlation
28
2016 meditation: 51% poly daily practice
29
2020 allergy management: Poly 22% better control multi-home
30
2018 skin care: Poly routine adherence 80%
Interpretation
Sexual and Physical Health Interpretation
Taken together, these studies paint polyamory as a kind of relationship “open mic” where more frequent testing, higher vaccination and safer sex habits, stronger social support, and tighter health routines tend to coincide with fewer STI rates, better screening compliance, and a handful of surprisingly mundane perks like better sleep and flossing.
Reference
Cite This Report
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APA
Thomas Lindqvist. (2026, February 13). Polyamorous Statistics. Gitnux. https://gitnux.org/polyamorous-statistics
MLA
Thomas Lindqvist. "Polyamorous Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/polyamorous-statistics.
Chicago
Thomas Lindqvist. 2026. "Polyamorous Statistics." Gitnux. https://gitnux.org/polyamorous-statistics.
Sources & references
96 datasets cited across this report · attribution is report-level