79104 leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 43% of adults in 79104 typically vote, below the U.S. average of about 62%. Among adults in 79104, ~19% vote Democratic, ~25% Republican, and ~56% don't vote. The map below shows estimated turnout by block group.
How 79104 compares
Among zip codes within 15 miles, 79104 leans more Republican than 3 of 13 neighbors.
Politically, 79104 sits close to the rest of Texas.
Why 79104 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 79104, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 8% of adults in 79104 hold a bachelor's degree, about 18 points below the Texas average of 26%. Dense places usually vote Democratic, but 79104 runs against that pattern.
High-school completion, developed land, and voter turnout
Places that combine low high-school-completion share and a heavily developed built environment tend to turn out at a lower rate, as 79104, TX does.
Why turnout in 79104 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 79104 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 42%, about 11 points below the Texas average of 54%. Renters vote less often than owners, and about 44% of households in 79104 rent, about 19 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 67% of adults in 79104 have completed high school, below 98% 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.