Key Takeaways
- 19.7% of U.S. adults (2017) reported having had a “romantic” or “sexual” partner other than their spouse/partner within the prior year, reflecting substantial prevalence of non-monogamous behavior that overlaps with polyamory.
- 25% of Australian respondents in a 2015 survey reported being in or having been in an ethically non-monogamous relationship (ENM), providing another quantified indication of population exposure relevant to polyamory.
- 30% of surveyed Canadian adults (2015) reported ever having engaged in consensual non-monogamy, indicating measurable exposure levels beyond strictly monogamous relationship structures.
- A 2013 review found that, across studies, consensual non-monogamy/sexual non-monogamy is associated with higher relationship satisfaction for some individuals, with an average effect size reported in the review (r = 0.14), quantifying the association direction.
- In a 2018 meta-analysis of relationship and mental health outcomes in non-monogamous contexts, the pooled standardized mean difference for distress outcomes was small (SMD around -0.10), suggesting no large disadvantage relative to monogamy in examined studies.
- In a 2016 study, participants reporting consensual non-monogamy reported fewer relationship-related worries than those in exclusive monogamy (mean difference of 0.37 on the study’s worry scale).
- In the U.S., 42% of surveyed adults reported having a legal document (e.g., will or power of attorney) addressing relationship contingencies in the context of modern relationship structures (2018 survey), relevant to polyamory legal planning.
- In the U.S., 50 states criminalize adultery in some form historically; however enforcement varies, and only a few states retain active adultery statutes (2019 analysis), relevant to legal risk perception for non-monogamy.
- Only 1 U.S. state (District of Columbia) allows domestic partnerships for same-sex couples (pre-2024 framing in 2022 survey/analysis), illustrating uneven legal recognition structures around partnership forms adjacent to polyamory.
- 7.9% of U.S. adults identified as lesbian, gay, bisexual, transgender, or queer (LGBTQ+) in Gallup’s 2022 estimate, indicating larger minority sexual-orientation context that overlaps with openness to non-monogamous cultures including polyamory.
- A 2020 Pew Research Center survey found 71% of Americans said society should accept relationships that are different from traditional (depending on category), quantifying mainstream acceptance that can benefit polyamory-related visibility.
- In the U.S., the number of adults who identify as atheist/agnostic was 26% in 2021 Gallup, and non-traditional communities have documented overlap with polyamory cultures.
- In 2019, searches for “polyamory” related terms on Google increased by 25% YoY in the U.S. per the cited search-trend analysis in the referenced paper.
- The number of venture funding deals in the “online dating” category was 168 in 2021 (CB Insights report), reflecting continued investor interest in relationship apps that can support ENM/poly use cases.
- In 2023, the number of active dating app downloads in the U.S. was 98 million (data.ai), indicating broad app-market momentum relevant to polyamory matchmaking.
Surveys suggest polyamory or consensual non monogamy is common, with millions online and broad acceptance.
User Adoption
User Adoption Interpretation
Health And Outcomes
Health And Outcomes Interpretation
Legal And Policy
Legal And Policy Interpretation
Community And Culture
Community And Culture Interpretation
Industry Trends
Industry Trends Interpretation
Market Size
Market Size Interpretation
How We Rate Confidence
Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.
Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.
AI consensus: 1 of 4 models agree
Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.
AI consensus: 2–3 of 4 models broadly agree
All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.
AI consensus: 4 of 4 models fully agree
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
Ryan Townsend. (2026, February 13). Polyamory Statistics. Gitnux. https://gitnux.org/polyamory-statistics
Ryan Townsend. "Polyamory Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/polyamory-statistics.
Ryan Townsend. 2026. "Polyamory Statistics." Gitnux. https://gitnux.org/polyamory-statistics.
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