57371 is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 60% of adults in 57371 typically vote, near the U.S. average of about 62%. Among adults in 57371, ~10% vote Democratic, ~50% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How 57371 compares
57371 sits in a sparsely populated area with few comparable zip codes nearby.
57371 runs about 38 points more Republican than South Dakota as a whole.
Why 57371 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 57371, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. 57371 sits in the bottom quarter on density and about 95% of residents are non-Hispanic white, about 15 points above the South Dakota average of 81%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 57371, SD sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 57371 looks the way it does
Renters vote less often than owners. About 41% of households in 57371 rent, about 16 points above the U.S. average of 25%. Strong routine healthcare access lines up with higher turnout, and 57371 sits in the top quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from South Dakota Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.