63829 is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 57% of adults in 63829 typically vote, near the U.S. average of about 62%. Among adults in 63829, ~10% vote Democratic, ~47% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How 63829 compares
Among zip codes within 15 miles, 63829 leans more Republican than 4 of 8 neighbors.
63829 runs about 47 points more Republican than Missouri as a whole.
Politics vary noticeably by block within 63829. The west side is the most Republican-leaning (R+77) and the north side is the least Republican-leaning (R+62), a spread of about 15 points.
Why 63829 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 63829, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 92% of residents in 63829 drive to work alone, about 18 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and 63829 sits in the bottom quarter (about 9%, below 95% of zip codes).
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 63829, 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 63829 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 63829 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 44%, about 13 points below the Missouri average of 57%. Renters vote less often than owners, and about 51% of households in 63829 rent, compared to around 25% in nearby zip codes. High food insecurity lines up with lower turnout, and about 26% of adults in 63829 report food insecurity, above 90% 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.