63551 is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 75% of adults in 63551 typically vote, above the U.S. average of about 62%. Among adults in 63551, ~10% vote Democratic, ~65% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 63551 compares
Among zip codes within 15 miles, 63551 is the most Republican-leaning.
63551 runs about 55 points more Republican than Missouri as a whole.
Why 63551 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 63551, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 4% of residents in 63551 live in densely developed areas, about 17 points below the Missouri average of 22%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 63551, MO sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 63551 looks the way it does
Homeowners vote more often than renters. About 89% of households in 63551 own their home, about 11 points above the Missouri average of 78%. High high-school completion lines up with higher turnout, and about 96% of adults in 63551 have completed high school, above 81% 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.