63743 is a Republican stronghold. About 12% of voters here vote Democratic and 88% Republican.
About 75% of adults in 63743 typically vote, above the U.S. average of about 62%. Among adults in 63743, ~9% vote Democratic, ~66% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 63743 compares
Among zip codes within 15 miles, 63743 leans more Republican than 12 of 13 neighbors.
63743 runs about 57 points more Republican than Missouri as a whole.
Why 63743 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 63743, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 90% of households in 63743 are family households, about 23 points above the U.S. average of 67%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 63743, MO sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 63743 looks the way it does
Homeowners vote more often than renters. About 96% of households in 63743 own their home, about 18 points above the Missouri average of 78%. High high-school completion lines up with higher turnout, and about 96% of adults in 63743 have completed high school, above 83% 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.