64117 leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 55% of adults in 64117 typically vote, below the U.S. average of about 62%. Among adults in 64117, ~31% vote Democratic, ~24% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How 64117 compares
Among zip codes within 15 miles, 64117 leans more Democratic than 31 of 68 neighbors.
64117 runs about 29 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 64117 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 64117. The east side is the most Democratic-leaning (D+20) and the northwest side is the least Democratic-leaning (D+3), a spread of about 18 points.
Why 64117 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 64117, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 87% of residents in 64117 live in densely developed areas, about 51 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 38% of adults in 64117 have never been married, above 85% of zip codes. 64117 runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 64117, MO sits in the top quarter nationally on this measure.
Why turnout in 64117 looks the way it does
Renters vote less often than owners. About 45% of households in 64117 rent, about 20 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and 64117 sits in the bottom quarter on routine-care measures. 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.