In case you want to pick where to live based on the supply of singles of the sex you prefer, Richard Florida has the info depicted nicely on a map. That map is telling me to get out of New York City — and back to Madison.
By the way, this idea that you should go where the sex ratio is best is called "the Jan and Dean rule":
I'm not sure which one is Jan and which one is Dean. I'm going to assume it's Jan on the left, because we read left to right, and moviemakers were probably trying to help us. But the first few seconds of that video are quite interesting, and I don't mean just as a study of nonactors not even trying to act. Why does "Jan" already have his 2 girls? It doesn't fit the dialogue (unless the point is supposed to be that Jan is an idiot and girls find Dean hopelessly unattractive). I think it's because without the girls, the dialogue would make Jan seem gay.
Which reminds me: Florida's map leaves you on your own to figure out the extent to which an oversupply of one sex means a lot of gay people choose to live there. But he's already telling us that New York has a huge oversupply of women.
Footnote: Richard Florida did a Bloggingheads recently.