Spring Creek, SD Political Map | Democrat & Republican Areas in Spring Creek

By the BestNeighborhood data science team. Last updated May 2026.

Spring Creek is a Democratic stronghold. About 77% of voters here vote Democratic and 23% Republican.

 

About 40% of adults in Spring Creek typically vote, below the U.S. average of about 62%. Among adults in Spring Creek, ~31% vote Democratic, ~9% Republican, and ~60% don't vote. The map below shows estimated turnout by block group.

How Spring Creek compares

Among cities within 25 miles, Spring Creek leans more Democratic than 9 of 14 neighbors.

Spring Creek runs about 82 points more Democratic than South Dakota as a whole. South Dakota leans Republican overall, while Spring Creek is one of the few Democratic-leaning pockets.

Politics vary noticeably by neighborhood within Spring Creek. The east side is the most Democratic-leaning (D+62) and the southwest side is the least Democratic-leaning (D+8), a spread of about 53 points.

Why Spring Creek 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 Spring Creek, not a ranked or complete list of what matters most.

Spring Creek votes against the grain of South Dakota. South Dakota leans Republican overall, while Spring Creek runs about 82 points more Democratic. A high never-married share predicts Democratic voting, and about 65% of adults in Spring Creek have never been married, in the top fraction of cities.

Cancer-screening access and voter turnout

Places with low colon-cancer-screening access tend to turn out at a lower rate; Spring Creek, SD sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in Spring Creek looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Spring Creek 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 37%, about 29 points below the South Dakota average of 66%. Low high-school completion lines up with lower turnout, and about 75% of adults in Spring Creek have completed high school, below 96% of cities. High-crime urban areas turn out at lower rates, and Spring Creek sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.

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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.