64134 is a Democratic stronghold. About 79% of voters here vote Democratic and 21% Republican.
About 55% of adults in 64134 typically vote, below the U.S. average of about 62%. Among adults in 64134, ~43% vote Democratic, ~11% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How 64134 compares
Among zip codes within 15 miles, 64134 leans more Democratic than 66 of 76 neighbors.
64134 runs about 76 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 64134 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 64134. The south side is the most Democratic-leaning (D+64) and the northeast side is the least Democratic-leaning (D+43), a spread of about 21 points.
Why 64134 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 64134, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 64134 is about 28%, about 44 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 40% of adults in 64134 have never been married, above 87% of zip codes. 64134 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; 64134, MO sits in the top quarter nationally on this measure.
Why turnout in 64134 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 64134 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 46% of households in 64134 rent, about 21 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 28% of adults in 64134 report food insecurity, above 93% 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.