64030 leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.
About 55% of adults in 64030 typically vote, below the U.S. average of about 62%. Among adults in 64030, ~38% vote Democratic, ~17% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How 64030 compares
Among zip codes within 15 miles, 64030 leans more Democratic than 43 of 59 neighbors.
64030 runs about 56 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while 64030 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 64030. The north side is the most Democratic-leaning (D+65) and the west side is the least Democratic-leaning (D+12), a spread of about 53 points.
Why 64030 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 64030, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 74% of residents in 64030 live in densely developed areas, about 38 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 43% of adults in 64030 have never been married, above 90% of zip codes. 64030 runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 64030, MO sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 64030 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 64030 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 47% of households in 64030 rent, compared to around 30% in nearby zip codes. High food insecurity lines up with lower turnout, and about 22% of adults in 64030 report food insecurity, above 85% 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.