A 2007 study from University of Northern Iowa looked at 2000 census data and found that cohabitating lesbians earn about 10 percent more annually than married women.

• 2007年一项来自北爱荷华州立大学的研究研究了2000个户口普查资料，发现同居的同性恋女性每年比已婚女性多赚10%25。