LA, NY lead cohabiting male couples

Link talks about rising housing costs, but also mentions:

"...The data also showed that, among couples living together in Manhattan, about 17 percent were unmarried in 2005, compared with 10 percent nationwide.

Manhattan appeared to have the second highest number of male couples living together, following Los Angeles."

The last sentence doesn't mean a whole lot because LA metro area has 18 million people while New York area has 22 million, but this includes Newark, Bronx, Queens and many areas outside of Manhattan. It makes no sense to compare the huge LA area to the much smaller and although denser, still less populated Manhattan area. For reference, the SF Bay Area including San Jose and Oakland only has 7.2 million inhabitants. Now if they said male couples per 1000 inhabitants, then this would start making some sense. I suppose that since this is a NYT article, they had to say something about NY.