63011 is a true toss-up. About 52% of voters here vote Democratic and 48% Republican.
About 87% of adults in 63011 typically vote, above the U.S. average of about 62%. Among adults in 63011, ~45% vote Democratic, ~42% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How 63011 compares
Among zip codes within 15 miles, 63011 leans more Democratic than 20 of 43 neighbors.
63011 runs about 23 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 63011 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 63011. The south side runs the most Democratic (D+15) and the northwest side runs the most Republican (R+11), a spread of about 26 points.
Why 63011 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 63011, not a ranked or complete list of what matters most.
63011 votes against the grain of Missouri. Missouri leans Republican overall, while 63011 runs about 23 points more Democratic.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 63011, MO sits in the top quarter nationally on this measure.
Why turnout in 63011 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 63011 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 63011 have completed high school, above 93% 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.