63456 is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 77% of adults in 63456 typically vote, above the U.S. average of about 62%. Among adults in 63456, ~18% vote Democratic, ~59% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How 63456 compares
Among zip codes within 15 miles, 63456 is the least Republican-leaning.
63456 runs about 36 points more Republican than Missouri as a whole.
Politics vary noticeably by block within 63456. The northeast side is the most Republican-leaning (R+68) and the east side is the least Republican-leaning (R+42), a spread of about 26 points.
Why 63456 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 63456, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 84% of residents in 63456 drive to work alone, about 10 points above the U.S. average of 74%.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 63456, MO sits below the national average on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 63456 looks the way it does
Turnout in 63456 sits close to the national pattern. 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.