Princeton Heights, St. Louis, MO Political Map | Democrat & Republican Areas in Princeton Heights

By the BestNeighborhood data science team. Last updated May 2026.

Princeton Heights leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.

 

About 76% of adults in Princeton Heights typically vote, above the U.S. average of about 62%. Among adults in Princeton Heights, ~54% vote Democratic, ~22% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.

How Princeton Heights compares

Among neighborhoods within 5 miles, Princeton Heights leans more Democratic than 6 of 23 neighbors.

Princeton Heights runs about 61 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while Princeton Heights is one of the few Democratic-leaning pockets.

Politics vary noticeably by block within Princeton Heights. The southwest side is the most Democratic-leaning (D+48) and the west side is the least Democratic-leaning (D+38), a spread of about 10 points.

Why Princeton Heights 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 Princeton Heights, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in Princeton Heights live in densely developed areas, about 64 points above the U.S. average of 36%. Princeton Heights runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.

Population density and Democratic lean

Places with high population density tend to lean Democratic; Princeton Heights, St. Louis, MO sits in the top quarter nationally on this measure.

Why turnout in Princeton Heights looks the way it does

Turnout in Princeton Heights 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.

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.