This is the basic premise of Dateonomics [https://www.amazon.com/Date-onomics-Dating-Became-Lopsided-Numbers/dp/076118208X https://www.amazon.com/Date-onomics-D

This is the basic premise of Dateonomics [https://www.amazon.com/Date-onomics-Dating-Became-Lopsided-Numbers/dp/076118208X https://www.amazon.com/Date-onomics-Dating-Became-Lopsided-N...] - the author looks at dating through the lens of gender ratios of college-educated people in different cities. Outside of SF though, the situation is likely reversed - many more women than men are graduating college, and people tend to want to pair off with people of similar educational achievement.