Best City For Singles - Washington DC?
Although I mostly stay in the suburbs (Northern Virginia), but I go to DC to party/hang out/drinking after work or on weekends here and there, and below are my experiences.
Work culture of DC: DC is full of hard-working young single professionals, who put in 50-60 hour work weeks to get ahead in his/her career. I’d like to think that as a group, young professionals in DC are probably the most ambitious people there are in the country. But the majority of those people sees DC as a "stepping stone" in their career, nobody I know was "raised in DC", most people moved to DC for work, and probably will move onto other parts of the country after DC "launches their careers". Knowing that, singles remain single for that specific reason. It’s nice to find a "nice girl who will move anywhere with you", but that just doesn’t happen, especially when the "nice girl" also has her own career to think about, probably just as seriously as guys do or more.
Social aspect of DC: Due to how much young professionals care about their own career, they care about each other’s just as much. When meeting a new person, and playing the 20 questions game that everyone likes to play so much (sarcasm), I often hear the question "so what do you do" before hearing "what do you enjoy doing", that just sums it all up for the social culture of DC. I’m sure it happens in all major cities in the US, but none as blatant as DC. I’ve always found southern girls are nicer, easier to talk to, and don’t automatically think you’re a threat when you ask them for directions. In downtown Charlotte, if I need directions, almost everyone stops when I say "excuse me", vs about one out of three people stopping in the city of Washington DC.
So statistically, AOL might be right in their stats, but they didn’t evaluate why. There’s a reason why DC has an extremely high amount of single professionals (population percentage wise), because a lot of singles want to remain single, and the "DC Culture" isn’t to the advantage of the ones that don’t. Lots of bars mean young people can have a great time in the city on weekends or after work, but it also means people have less motivation to "find a boyfriend/girlfriend" because they always have something to do. Dating definite is a lot more common than relationships, that might be a factor why DC was picked "best place to live for singles", but personally, as a single guy, I’d much rather live in a society where people are friendly, both singles and people that’re in relationships, instead of a society where people are defined by their jobs or status. But if you're single, want to stay single, and mostly stay/hang out with your clique of friends (like I currently do), then I guess Washington DC just might be the right place for you.

