Denver has run on the same dating nickname for over a decade: "Menver." The premise is simple — an outdoorsy, male-skewing job market draws single men to the Mile High City faster than single women, tilting the odds in women's favor. Unlike most of the myths this series has debunked, this one has genuinely been true. What's new, and what makes Denver worth covering right now rather than at any earlier point, is that the city's own most recent reporting suggests it may be actively coming apart — not as a debunking, but as a live demographic shift happening in real time.
The old data: Menver was real, and it still is for most single adults
Start with what's well established. Census-derived estimates have consistently shown Denver citywide running slightly male-heavy — around 101 to 102 men per 100 women, a small but real tilt above the national average. That aggregate number, though, undersells the effect for the age brackets that matter most. A 2025 analysis by Denverite, drawing on Colorado's State Demographer's Office data, found the gap widens sharply with age: roughly 108 men for every 100 women in their 30s, and 113 men per 100 women in their 40s — among the more skewed ratios documented anywhere in this series, and a pattern that holds through the 50s as well.
The new data: the youngest cohort has flipped
Here's the genuinely current finding. That same Denverite analysis found the pattern breaks down entirely for adults in their 20s — the estimates suggest women may now slightly outnumber men in that bracket, a reversal from 2000, when Denver had thousands more young men than young women in the same age range. A separate Denver Westword feature published within weeks of that analysis, in September 2025, declared the shift directly in its headline: "No More Menver." Both pieces are recent enough that this isn't settled history — it's an active, ongoing demographic transition that the city's own local reporting is still tracking in real time.
The explanation, per a demographer quoted in the Westword piece, isn't cultural — it's structural. Denver's male-skewing population was historically driven by a concentration of oil and gas company headquarters in the city specifically; as that concentration has diminished, the effect has faded for the youngest cohort even as Colorado's continued strength in other male-heavy fields — tech, finance, legal, and engineering — keeps the tilt intact for older age groups already established in those careers.
Why the youngest cohort's pool is shrinking, not just rebalancing
There's a second force at work that neither piece fully connects to the ratio story: Colorado's incoming population of young adults is genuinely getting smaller, independent of gender. A July 2025 report from the Common Sense Institute found Colorado's overall net migration has declined by nearly 53% over the past decade, and — notably — the Denver-Aurora-Lakewood metro was the only major peer metro area in the analysis to show a negative migration trend at all, down an estimated 70% since 2014. As Denverite's demographer source puts it, residents tend to leave Denver as they age, and there's simply a smaller incoming group of young adults arriving to replace them.
That decline isn't evenly distributed by income, though, which matters for a professional-dating-focused read of the data. A separate 2025 migration analysis using proprietary relocation data found that while Colorado's overall net migration turned negative, affluent millennial and Gen X professionals are still actively moving in, largely from Texas and California, even as middle-income residents and retirees leave for lower-cost states. Denver's incoming population, in other words, is shrinking in volume but skewing more toward exactly the higher-earning professional demographic this series has tracked elsewhere.
What the loneliness data shows
Colorado has a genuinely rigorous, current, government-backed measure here: the 2025 Colorado Health Access Survey, run by the Colorado Health Institute with loneliness questions specifically sponsored by the Denver and Broomfield departments of public health and environment, uses three validated measures — lack of companionship, feeling left out, and self-perceived isolation — to track loneliness statewide and locally. (The topline figures sit in an interactive dashboard rather than a single static number, so the specific current percentage should be pulled directly before publishing.) That it exists at all, sponsored directly by Denver's own health department, signals the city is treating this as a measured public health variable rather than an assumption — a stronger evidentiary posture than most cities in this series can claim.
Reframing the Denver story
Put together, Denver doesn't fit the "stable narrative, correct or debunk it" template this series has used for every other city. What the data shows instead is a demographic story actively in motion:
The core "Menver" premise is real for anyone in their 30s or older — among the more genuinely skewed ratios in this entire series, not a myth.
It's reversing for the youngest single adults, driven by a specific, named structural cause (the decline of Denver's oil and gas headquarters concentration) rather than a general cultural shift.
The incoming population is shrinking overall but not evenly — Colorado's migration slowdown is real and metro-specific to Denver among its peers, while the professionals who are still arriving skew toward higher earners.
What that implies practically
The useful takeaway for Denver isn't a fixed number to plan around — it's that any given gender-ratio claim about the city is likely to already be somewhat out of date, given how recently and how specifically local reporting has documented the shift. That argues for treating Denver's dating market as actively transitional rather than settled: a format built around the assumption of a stable, heavily male-skewed pool would already be describing a cohort in their late 30s and up more accurately than one in their 20s, and the gap between those two groups appears to be widening, not narrowing, in the most current data available.
Sources referenced
U.S. Census Bureau / Neilsberg, Denver, CO gender ratio and age data
Denverite, "Is 'Menver' Even Real?," October 2025, citing Colorado State Demography Office data
Denver Westword, "No More Menver: In Denver, Young Adult Women Now Outnumber Young Men," September 2025
Common Sense Institute, "Fewer Movers, Bigger Problems: Migration Declines in Colorado & Its Biggest Cities," July 2025
Colorado Public Radio (CPR News), reporting on Common Sense Institute migration report, July 2025
HireAHelper, "2025 Colorado Migration Report," citing proprietary relocation data (June 2024–May 2025)
Colorado Health Institute, "2025 CHAS: Loneliness in Colorado," sponsored in part by the Denver and Broomfield Departments of Public Health and Environment
Note: the specific current loneliness percentage from the 2025 CHAS dashboard wasn't retrievable as a static figure and should be pulled directly from the interactive tool before publishing. Given how recently (within the past several months) both the Denverite and Westword pieces were published, it's also worth a final freshness check before this goes live — this is a faster-moving story than most in the series.