57560 leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 45% of adults in 57560 typically vote, below the U.S. average of about 62%. Among adults in 57560, ~20% vote Democratic, ~25% Republican, and ~55% don't vote. The map below shows estimated turnout by block group.
How 57560 compares
57560 sits in a sparsely populated area with few comparable zip codes nearby.
57560 runs about 19 points more Democratic than South Dakota as a whole.
Politics vary noticeably by block within 57560. The southwest side runs the most Democratic (D+9) and the northwest side runs the most Republican (R+12), a spread of about 20 points.
Why 57560 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 57560, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 1% of residents in 57560 live in densely developed areas, about 8 points below the South Dakota average of 9%.
Population density and Republican lean
Places with low population density tend to lean Republican; 57560, SD sits in the bottom tenth nationally on this measure.
Why turnout in 57560 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 57560 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 46%, about 20 points below the South Dakota average of 66%. Renters vote less often than owners, and about 43% of households in 57560 rent, about 18 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 57560 sits in the top 15% on a violent-crime measure. 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.