Lone Star, San Antonio, TX Political Map | Democrat & Republican Areas in Lone Star

Lone Star leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.

 
Lone Star, San Antonio, TX block-group political-lean map
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About 48% of adults in Lone Star typically vote, below the U.S. average of about 62%. Among adults in Lone Star, ~32% vote Democratic, ~15% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.

Lone Star, San Antonio, TX block-group voter-turnout map
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How Lone Star compares

Among neighborhoods within 5 miles, Lone Star leans more Democratic than 21 of 37 neighbors.

Lone Star runs about 49 points more Democratic than Texas as a whole. Texas leans Republican overall, while Lone Star is one of the few Democratic-leaning pockets.

Why Lone Star 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 Lone Star, not a ranked or complete list of what matters most.

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

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Lone Star, San Antonio, TX sits above the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Lone Star looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Lone Star is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 26%, about 8 points above the Texas average of 19%. High-crime urban areas turn out at lower rates, and Lone Star 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.