Hillside is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 70% of adults in Hillside typically vote, above the U.S. average of about 62%. Among adults in Hillside, ~10% vote Democratic, ~61% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Hillside compares
Among cities within 25 miles, Hillside leans more Republican than 17 of 19 neighbors.
Hillside runs about 42 points more Republican than South Dakota as a whole.
Why Hillside leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Hillside, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. Hillside sits in the bottom quarter on density and about 95% of residents are non-Hispanic white, about 14 points above the South Dakota average of 81%. A high family-household share predicts Republican voting, and about 75% of households in Hillside are family households, above 76% of cities.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Hillside, SD sits in the bottom tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Hillside looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Hillside 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 67%, about 7 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Corsica, SD R+72
- Dimock, SD R+71
- Ethan, SD R+66
- Armour, SD R+59
- Parkston, SD R+66
- Stickney, SD R+60
- Mount Vernon, SD R+67
- Harrison, SD R+71
- Delmont, SD R+65
- Mitchell, SD R+40
Cities with Similar Populations
- Meservey, IA R+47
- Houstonville, NC R+64
- Brunsville, IA R+60
- Pinewood, TN R+66
- Union Valley, OK R+61
- Mount Vernon, MI R+50
- Woodrow, KY R+64
- Mount Pleasant, IL R+59
- Roby, MO R+71
- Indian Lake, PA R+59
All Local Stats
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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.