57529 is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 64% of adults in 57529 typically vote, near the U.S. average of about 62%. Among adults in 57529, ~10% vote Democratic, ~54% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 57529 compares
Among zip codes within 15 miles, 57529 leans more Republican than 2 of 3 neighbors.
57529 runs about 40 points more Republican than South Dakota as a whole.
Why 57529 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 57529, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 3% of residents in 57529 live in densely developed areas, about 7 points below the South Dakota average of 9%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 57529, SD sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 57529 looks the way it does
Turnout in 57529 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.