From a Washington Post story "Helping the black family through gay marriage" came some surprising statistics.
|Table From Washington Post|
Note: Nearly all these states have passed constitutional amendments banning same sex marriage, and in some cases, civil unions as well. Some were overturned by the courts.
Information for the chart below is from Wikipedia.
The article mainly focuses on black same sex couples. It also challenges the belief that gay couples tend to be wealthier than straight couples. You can read the whole piece here.