See the Ratio of Single Men to Women Where You Live
labs.time.com
labs.time.com
An interesting (and for me, somewhat surprising) point is the stark difference in gender disparity when looking at college-degree singles vs no-degree singles.
It's interesting that as the age increases, the proportion of single women generally increases. The biggest disparity is above the age of 65 where the men are dying off much earlier than the women, leaving a lot of single women. I hear that single men are highly sought after in retirement communities.