64158 is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 65% of adults in 64158 typically vote, near the U.S. average of about 62%. Among adults in 64158, ~32% vote Democratic, ~33% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 64158 compares
Among zip codes within 15 miles, 64158 sits roughly in the middle of the political spectrum, with 40 neighbors leaning further in the place's direction and 17 leaning the other way.
64158 runs about 16 points more Democratic than Missouri as a whole.
Politics vary noticeably by block within 64158. The southeast side runs the most Democratic (D+5) and the west side runs the most Republican (R+5), a spread of about 11 points.
Why 64158 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 64158. The lean here lands roughly where demographic data alone would predict.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 64158, MO sits in the top quarter nationally on this measure.
Why turnout in 64158 looks the way it does
Areas with high high-school completion turn out at higher rates. About 99% of adults in 64158 have completed high school, about 9 points above the Missouri average of 89%. 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.