Maryland Heights leans Democratic by roughly 26 points: about 63% of voters vote Democratic and 37% Republican.
About 61% of adults in Maryland Heights typically vote, near the U.S. average of about 62%. Among adults in Maryland Heights, ~38% vote Democratic, ~23% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How Maryland Heights compares
Among cities within 25 miles, Maryland Heights leans more Democratic than 114 of 178 neighbors.
Maryland Heights runs about 45 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while Maryland Heights is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Maryland Heights. The southwest side is the most Democratic-leaning (D+40) and the northwest side is the least Democratic-leaning (D+8), a spread of about 32 points.
Why Maryland Heights leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Maryland Heights, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 92% of residents in Maryland Heights live in densely developed areas, about 55 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Maryland Heights sits in the top quarter (about 53%, above 95% of cities). Maryland Heights runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Maryland Heights, MO sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Maryland Heights looks the way it does
Renters vote less often than owners. About 41% of households in Maryland Heights rent, about 16 points above the U.S. average of 25%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Bridgeton, MO D+16
- St. Ann, MO D+25
- Creve Coeur, MO D+24
- Breckenridge Hills, MO D+33
- Overland, MO D+24
- Edmundson, MO D+27
- Woodson Terrace, MO D+30
- Olivette, MO D+53
- Westwood, MO D+11
Cities with Similar Populations
- Lansing, IL D+49
- Miccosukee Cpo, FL R+3
- Gloucester, MA D+16
- Bonney Lake, WA R+5
- Pataskala, OH R+25
- Dade City, FL R+30
- Geneva, IL D+12
- Kankakee, IL D+23
- Bartow, FL R+19
- Scaggsville, MD D+44
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.