64108 is a Democratic stronghold. About 80% of voters here vote Democratic and 20% Republican.
About 50% of adults in 64108 typically vote, below the U.S. average of about 62%. Among adults in 64108, ~40% vote Democratic, ~10% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How 64108 compares
Among zip codes within 15 miles, 64108 leans more Democratic than 80 of 87 neighbors.
64108 runs about 79 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 64108 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 64108. The northeast side is the most Democratic-leaning (D+75) and the southwest side is the least Democratic-leaning (D+51), a spread of about 24 points.
Why 64108 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 64108, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 64108 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 64108 sits in the top quarter (about 48%, above 87% of zip codes). 64108 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; 64108, MO sits in the top quarter nationally on this measure.
Why turnout in 64108 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 64108 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 61% of households in 64108 rent, about 36 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 64108 sits in the top 15% on a violent-crime measure. 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.