Richmond Heights leans heavily Democratic by roughly 50 points: about 75% of voters vote Democratic and 25% Republican.
About 78% of adults in Richmond Heights typically vote, above the U.S. average of about 62%. Among adults in Richmond Heights, ~58% vote Democratic, ~19% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Richmond Heights compares
Among cities within 25 miles, Richmond Heights leans more Democratic than 129 of 177 neighbors.
Richmond Heights runs about 68 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while Richmond Heights is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Richmond Heights. The northeast side is the most Democratic-leaning (D+64) and the northwest side is the least Democratic-leaning (D+32), a spread of about 32 points.
Why Richmond 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 Richmond Heights, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Richmond Heights live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Richmond Heights sits in the top quarter (about 76%, in the top fraction of cities). Richmond Heights runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Richmond Heights, MO sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Richmond Heights looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Richmond Heights is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and more than 99% of adults in Richmond Heights have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Clayton, MO D+60
- Maplewood, MO D+57
- Brentwood, MO D+31
- University City, MO D+69
- Rock Hill, MO D+47
- St. Louis, MO D+6
- Ladue, MO D+7
- Shrewsbury, MO D+32
- Webster Groves, MO D+38
- Pagedale, MO D+82
Cities with Similar Populations
- Roebuck, SC R+32
- Reidsville, GA R+34
- Boring, OR R+19
- Becker, MN R+42
- Sayre, PA R+25
- North Weeki Wachee, FL R+39
- Salem, NJ D+15
- Bonadelle Ranchos-Madera Ranchos, CA R+37
- Springfield, GA R+38
- Golden Hills, CA R+37
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.