Richard Florida captions:

The list … shows the 15 metros that have the largest percentage of same-sex couples raising children under 18 years of age. The densest concentrations of such families are not necessarily in the places where you'd expect to find them. Especially surprising are the metros that don't make the cut — like San Francisco and New York.

Notice how many red-state metro regions make the list. One guess why: conservative states' social pressures produce gays who are more inclined to raise families (an example of the majority influencing the minority far more than vice versa). And look at Texas: leading the way for gay families in America.