In a map:
A recent report (pdf) on same-sex adoption collects basic facts on gay and lesbian families:
Same-sex couples live in virtually all counties (99.3%) across the U.S., and 96% of counties in the U.S. have same-sex couples raising children. Not surprisingly, places like New York City, Los Angeles and the San Francisco Bay Area have the highest concentration of same-sex couples raising children, primarily because those areas have the highest concentration of same-sex couples (that is, both with and without children). However, this doesn’t mean that same-sex couples in these areas are more likely to be raising children than those in other areas. In fact, California and New York don’t even make the list of the top 10 states where same-sex couples are most likely to be raising children. Surprisingly, the state at the top of the list is Mississippi.
More highlights from the report here.
(Hat tip: Joe My God)