57342 is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 59% of adults in 57342 typically vote, near the U.S. average of about 62%. Among adults in 57342, ~9% vote Democratic, ~50% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.
How 57342 compares
Among zip codes within 15 miles, 57342 leans more Republican than 2 of 4 neighbors.
57342 runs about 39 points more Republican than South Dakota as a whole.
Politics vary noticeably by block within 57342. The west side is the most Republican-leaning (R+73) and the east side is the least Republican-leaning (R+46), a spread of about 27 points.
Why 57342 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 57342. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 57342, 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 57342 looks the way it does
High-crime urban areas turn out at lower rates, mostly because the housing stress common in those areas makes voting harder. 57342 sits in the top 15% nationally on a violent-crime measure. See CrimeGrade for more details. Low high-school completion lines up with lower turnout, and about 97% of adults in 57342 have completed high school, above 87% 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.