The city that has the most single women is Kiev, Ukraine. In the United States, the city with the highest proportion of single women is Washington, D.C.
As of 2013, the Washington metro area has 1.12 single women for every single man. This ratio jumps to 1.2 single women for every man in the Maryland suburbs in Bethesda, Rockville and Frederick. Boston has 1.09 single women for every single man, and the ratio in New York City is 1.07 single women for every single man. The U.S. locales with the highest ratios of single men include Gillette, Wyo., Rock Springs, Wyo. and Williston, N.D.