I'm not sure where your getting this. According to the data, there's slightly more women (even if we scope it to just any single generation, let's say just millennials in NYC for simplicity - https://www.mynbc5.com/article/theres-a-reason-why-so-many-m... )

In my home state, for example, there's about 8% more single Women than Men. And there's a list of like two dozen medium-sized and major metros where this is true across the US (Pittsburgh, Boston, Detroit, Richmond and DC metro, etc) - https://www.movebuddha.com/blog/best-cities-single-men/

Atlanta too, has more single women than men by a wide margin ( https://www.thrillist.com/entertainment/atlanta/why-dating-i... )

Yes, the tech hub metros lean male-heavy (SF, Seattle, Austin, etc). But, generally speaking, most of the US is the opposite, so.

This isn't true in NY/Boston/DC.

Interesting, I hadn't heard of this. Where do the women go? Also, link?