63664 is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 65% of adults in 63664 typically vote, near the U.S. average of about 62%. Among adults in 63664, ~13% vote Democratic, ~52% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 63664 compares
Among zip codes within 15 miles, 63664 leans more Republican than 1 of 8 neighbors.
63664 runs about 42 points more Republican than Missouri as a whole.
Politics vary noticeably by block within 63664. The south side is the most Republican-leaning (R+69) and the east side is the least Republican-leaning (R+51), a spread of about 17 points.
Why 63664 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 63664, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 13% of adults in 63664 hold a bachelor's degree, about 9 points below the Missouri average of 22%. Car-dependent areas vote Republican, and about 83% of residents in 63664 drive to work alone, above 81% of zip codes.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 63664, MO sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 63664 looks the way it does
Turnout in 63664 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.