79409 leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 39% of adults in 79409 typically vote, below the U.S. average of about 62%. Among adults in 79409, ~26% vote Democratic, ~13% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.
How 79409 compares
Among zip codes within 15 miles, 79409 is the most Democratic-leaning.
79409 runs about 48 points more Democratic than Texas as a whole. Texas leans Republican overall, while 79409 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 79409. The southeast side runs the most Democratic (D+37) and the northwest side runs the most Republican (R+19), a spread of about 56 points.
Why 79409 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 79409, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 82% of adults in 79409 hold a bachelor's degree, about 54 points above the U.S. average of 28%. Dense areas vote Democratic, and 79409 sits in the top fifth on density (more than 99%, above 96% of zip codes). 79409 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 79409, TX sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 79409 looks the way it does
Renters vote less often than owners. About 93% of households in 79409 rent, about 68 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and 79409 sits in the bottom quarter on routine-care measures. Low high-school completion lines up with lower turnout, and about 98% of adults in 79409 have completed high school, above 92% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.