63147 is a Democratic stronghold. About 92% of voters here vote Democratic and 8% Republican.
About 55% of adults in 63147 typically vote, below the U.S. average of about 62%. Among adults in 63147, ~51% vote Democratic, ~4% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How 63147 compares
Among zip codes within 15 miles, 63147 leans more Democratic than 65 of 73 neighbors.
63147 runs about 103 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 63147 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 63147. The west side is the most Democratic-leaning (D+89) and the southeast side is the least Democratic-leaning (D+73), a spread of about 16 points.
Why 63147 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 63147, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 96% of residents in 63147 live in densely developed areas, about 59 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 51% of adults in 63147 have never been married, above 95% of zip codes. 63147 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; 63147, 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 63147 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 63147 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 44% of households in 63147 rent, about 19 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 38% of adults in 63147 report food insecurity, above 98% 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.