Warning: demographic geekery ahead.
In the dating thread, I mentioned how it seems like most of the women that respond to my online dating profile are older than me, with a large number being 5 to 20 years older; in their 50s and early 60s. In another FAC thread where there were pictures of my town, Zoning Goddess remarked on the predominance of gray-haired older women. Meanwhile, around town, I've noticed that there seems to be a lot of Boomer ladies on the streets, without a correspondingly high number of men in the same age group.
"Confirmation bias! Confirmation bias!" Nope. Here's the numbers. Percentage of population of a gender for various age groups in town.
35 to 39 years - Men 5.3% Women 3.4%
40 to 44 years - Men 3.6% Women 3.5%
45 to 49 years - Men 3.4% Women 3.1%
50 to 54 years - Men 2.9% Women 4.5%
55 to 59 years - Men 3.4% Women 3.2%
60 to 64 years - Men 1.0% Women 3.2%
35 to 39 years - Men 6.6% Women 6.5%
40 to 44 years - Men 6.9% Women 6.7%
45 to 49 years - Men 7.3% Women 7.3%
50 to 54 years - Men 7.2% Women 7.2%
55 to 59 years - Men 6.3% Women 6.5%
60 to 64 years - Men 5.4% Women 5.6%
So, what kind of demographic forces are at play that would give a place a disproportionately large percentage of women in the 50-65 age group? The town where I live has a large lesbian community, but I don't think it's enough to account for the 1:3 female/male ratio in the 60-64 age group.
This isn't the only place I've lived where there was some apparently unexplainable quirk in the demographics. There was the suburb of Orlando where a plurality of residents, if not a majority, worked in construction and the trades. The number of times I've heard Nextel beeps since I left many years ago is probably the same as what I heard in one day there.