63557 is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 73% of adults in 63557 typically vote, above the U.S. average of about 62%. Among adults in 63557, ~12% vote Democratic, ~61% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How 63557 compares
Among zip codes within 15 miles, 63557 leans more Republican than 1 of 5 neighbors.
63557 runs about 49 points more Republican than Missouri as a whole.
Why 63557 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 63557, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 63557, about 96% of residents are non-Hispanic white, about 24 points above the U.S. average of 72%; about 17% of adults hold a bachelor's degree, about 5 points below the Missouri average of 22%. Rural areas vote Republican, and 63557 sits in the bottom quarter on density (about 4%, below 89% of zip codes).
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 63557, MO sits in the bottom quarter 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 63557 looks the way it does
Homeowners vote more often than renters. About 90% of households in 63557 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 63557 have completed high school, above 84% 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.