63055 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 84% of adults in 63055 typically vote, above the U.S. average of about 62%. Among adults in 63055, ~22% vote Democratic, ~62% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How 63055 compares
Among zip codes within 15 miles, 63055 leans more Republican than 10 of 16 neighbors.
63055 runs about 29 points more Republican than Missouri as a whole.
Why 63055 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 63055, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 74% of households in 63055 are family households, about 7 points above the U.S. average of 67%.
Frequent mental distress and voter turnout
Places with a low frequent-mental-distress rate tend to turn out at a higher rate; 63055, MO sits in the bottom tenth nationally on this measure. Reported mental distress does not drive turnout; it reflects economic and health conditions tied to voting.
Why turnout in 63055 looks the way it does
Turnout in 63055 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.