63144 leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.
About 77% of adults in 63144 typically vote, above the U.S. average of about 62%. Among adults in 63144, ~51% vote Democratic, ~26% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How 63144 compares
Among zip codes within 15 miles, 63144 leans more Democratic than 29 of 75 neighbors.
63144 runs about 50 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 63144 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 63144. The east side is the most Democratic-leaning (D+43) and the northwest side is the least Democratic-leaning (D+16), a spread of about 26 points.
Why 63144 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 63144, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 63144 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 63144 sits in the top quarter (about 75%, above 98% of zip codes). 63144 runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 63144, MO sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 63144 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 63144 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 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 99% of adults in 63144 have completed high school, above 97% 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.