The index, 'developed by Gary Gates, a demographer at UCLA’s Williams Institute, the Gay/Lesbian Index value tells you how the proportion of same-sex couples among all households of a given metro area compares to the average for the entire U.S.' Portland, Maine, comes in an at impressive third place with 7.4 same-sex couples per thousand households. The just-released Gay/Lesbian Index’s metro-area rankings provide another bit of recognition that will please both the LGBT community and creative economy watchers in Portland.