Holly Hills leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.
About 64% of adults in Holly Hills typically vote, near the U.S. average of about 62%. Among adults in Holly Hills, ~45% vote Democratic, ~19% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Holly Hills compares
Among neighborhoods within 5 miles, Holly Hills leans more Democratic than 4 of 23 neighbors.
Holly Hills runs about 58 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while Holly Hills is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within Holly Hills. The northeast side is the most Democratic-leaning (D+44) and the northwest side is the least Democratic-leaning (D+25), a spread of about 19 points.
Why Holly Hills leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Holly Hills, not a ranked or complete list of what matters most.
Holly Hills votes against the grain of Missouri. Missouri leans Republican overall, while Holly Hills runs about 58 points more Democratic.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; Holly Hills, St. Louis, MO sits in the top quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Holly Hills looks the way it does
Turnout in Holly Hills sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Carondelet, St. Louis, MO D+51
- Bevo Mill, St. Louis, MO D+40
- Boulevard Heights, St. Louis, MO D+25
- Dutchtown, St. Louis, MO D+64
- Mount Pleasant, St. Louis, MO D+61
- Princeton Heights, St. Louis, MO D+42
- South Hampton, St. Louis, MO D+55
- Tower Grove South, St. Louis, MO D+65
- Gravois Park, St. Louis, MO D+72
- North Hampton, St. Louis, MO D+54
Neighborhoods with Similar Populations
- Fairwood and Robandee, Kansas City, MO D+55
- Braun Station West, San Antonio, TX R+4
- Jefferson, Culver City, CA D+59
- Park, Redford, MI D+79
- Wellington, Manassas, VA D+13
- Southwood, Richmond, VA D+37
- Willow Creek, Kansas City, MO D+55
- Downtown Nashville, Nashville, TN D+50
- West Central, Fort Wayne, IN D+31
- Old Town Florissant, Florissant, MO D+30
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.