| State of South Dakota |
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| Total population | 754,844 | Rank: | 46th | |
| Percent of people in same-sex couples | 0.22% | Rank: | 52nd(last) | |
| Total same-sex couples | 826 | Rank: | 50th | |
| Percent of male couples | 0.23% | Rank: | 52nd(last) | |
| Percent of female couples | 0.26% | Rank: | 51st | |
| By county | By census tract | By zip code | By state MSA | |
| By incorporated place | ||||