64120 is a true toss-up. About 51% of voters here vote Democratic and 49% Republican.
About 38% of adults in 64120 typically vote, below the U.S. average of about 62%. Among adults in 64120, ~19% vote Democratic, ~18% Republican, and ~63% don't vote. The map below shows estimated turnout by block group.
How 64120 compares
Among zip codes within 15 miles, 64120 sits roughly in the middle of the political spectrum, with 21 neighbors leaning further in the place's direction and 59 leaning the other way.
64120 runs about 20 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 64120 sits closer to the political middle.
Politics vary noticeably by block within 64120. The southwest side runs the most Democratic (D+10) and the west side runs the most Republican (Even), a spread of about 11 points.
Why 64120 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 64120, not a ranked or complete list of what matters most.
64120 votes against the grain of Missouri. Missouri leans Republican overall, while 64120 runs about 20 points more Democratic.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 64120, MO sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 64120 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 64120 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 32%, about 25 points below the Missouri average of 57%. Renters vote less often than owners, and about 85% of households in 64120 rent, compared to around 57% in nearby zip codes. High food insecurity lines up with lower turnout, and about 43% of adults in 64120 report food insecurity, in the top fraction 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.