Timothy Kincaid calculates how same-sex couples fare nationwide:
4.5% of Americans live in a state that recognizes marriages (Massachusetts, Connecticut, Iowa, and Vermont)
16.6% of Americans live in a state that offers all of the benefits and obligations of marriage by a different name (California, New Jersey, Oregon, and New Hampshire)
5.1% of Americans live in a state (or District) that offers recognition to same-sex couples, but not with all of the same benefits and obligations as marriage (Hawaii, Maine, Washington, District of Columbia, and Maryland)
7.4% of Americans live in a state that either recognizes out-of-state legal marriages or in which that status has not been fully determined (Rhode Island, New York, and New Mexico)
66.4% of Americans live in a state that does not recognize their relationship at all
Of course, Kincaid is talking about state benefits. DOMA ensures that 100% of gay couples are denied federal benefits.