64118 leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 64% of adults in 64118 typically vote, near the U.S. average of about 62%. Among adults in 64118, ~34% vote Democratic, ~30% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 64118 compares
Among zip codes within 15 miles, 64118 leans more Democratic than 28 of 62 neighbors.
64118 runs about 24 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 64118 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 64118. The northwest side runs the most Democratic (D+14) and the northeast side runs the most Republican (R+6), a spread of about 19 points.
Why 64118 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 64118, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 91% of residents in 64118 live in densely developed areas, about 54 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 34% of adults in 64118 have never been married, above 77% of zip codes. 64118 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; 64118, MO sits in the top quarter nationally on this measure.
Why turnout in 64118 looks the way it does
Turnout in 64118 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.