Jefferson Heights, San Antonio, TX Political Map | Democrat & Republican Areas in Jefferson Heights

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

Jefferson Heights leans heavily Democratic by roughly 48 points: about 74% of voters vote Democratic and 26% Republican.

 

About 40% of adults in Jefferson Heights typically vote, below the U.S. average of about 62%. Among adults in Jefferson Heights, ~30% vote Democratic, ~10% Republican, and ~60% don't vote. The map below shows estimated turnout by block group.

How Jefferson Heights compares

Among neighborhoods within 5 miles, Jefferson Heights leans more Democratic than 26 of 28 neighbors.

Jefferson Heights runs about 63 points more Democratic than Texas as a whole. Texas leans Republican overall, while Jefferson Heights is one of the few Democratic-leaning pockets.

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

Jefferson Heights votes against the grain of Texas. Texas leans Republican overall, while Jefferson Heights runs about 63 points more Democratic. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in Jefferson Heights is about 6%, compared to around 21% in nearby neighborhoods. A high never-married share predicts Democratic voting, and about 52% of adults in Jefferson Heights have never been married, above 85% of neighborhoods.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Jefferson Heights, San Antonio, TX sits in the top quarter 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 Jefferson Heights looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Jefferson Heights is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 41%, about 13 points below the Texas average of 54%. Low high-school completion lines up with lower turnout, and about 79% of adults in Jefferson Heights have completed high school, below 86% of neighborhoods. High-crime urban areas turn out at lower rates, and Jefferson Heights sits in the top 15% on a violent-crime measure. 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 Texas Secretary of State, Elections Division, 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.