57474 is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 71% of adults in 57474 typically vote, above the U.S. average of about 62%. Among adults in 57474, ~13% vote Democratic, ~57% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How 57474 compares
Among zip codes within 15 miles, 57474 leans more Republican than 6 of 7 neighbors.
57474 runs about 33 points more Republican than South Dakota as a whole.
Why 57474 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 57474, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 57474, about 98% of residents are non-Hispanic white, about 25 points above the U.S. average of 72%; about 11% of adults hold a bachelor's degree, about 14 points below the South Dakota average of 26%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 57474, SD sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 57474 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 57474 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 73%, about 13 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in 57474 own their home, about 19 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 96% of adults in 57474 have completed high school, above 80% of zip codes. 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.