| State of Montana |
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| Total population | 902,195 | Rank: | 44th | |
| Percent of people in same-sex couples | 0.27% | Rank: | 49th | |
| Total same-sex couples | 1,218 | Rank: | 48th | |
| Percent of male couples | 0.26% | Rank: | 49th | |
| Percent of female couples | 0.32% | Rank: | 48th | |
| By county | By census tract | By zip code | By state MSA | |
| By Incorporated place | Maps | |||