63837 is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.
About 51% of adults in 63837 typically vote, below the U.S. average of about 62%. Among adults in 63837, ~8% vote Democratic, ~43% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.
How 63837 compares
Among zip codes within 15 miles, 63837 leans more Republican than 8 of 14 neighbors.
63837 runs about 51 points more Republican than Missouri as a whole.
Why 63837 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 63837, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 6% of adults in 63837 hold a bachelor's degree, about 16 points below the Missouri average of 22%.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 63837, MO 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 63837 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 63837 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 49%, about 8 points below the Missouri average of 57%. High food insecurity lines up with lower turnout, and about 21% of adults in 63837 report food insecurity, above 82% of zip codes. Low high-school completion lines up with lower turnout, and about 70% of adults in 63837 have completed high school, below 98% 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 Missouri 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.