78076 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 54% of adults in 78076 typically vote, below the U.S. average of about 62%. Among adults in 78076, ~25% vote Democratic, ~29% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How 78076 compares
78076 runs about 7 points more Democratic than Texas as a whole.
Politics vary noticeably by block within 78076. The north side runs the most Democratic (D+3) and the southwest side runs the most Republican (R+19), a spread of about 22 points.
Why 78076 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 78076, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 74% of households in 78076 are family households, about 8 points above the U.S. average of 67%. Low college attainment predicts Republican voting, and 78076 sits in the bottom quarter (about 15%, below 81% of zip codes).
Park access and Republican lean
Places with low park coverage tend to lean Republican; 78076, TX sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 78076 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 78076 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 38%, about 16 points below the Texas average of 54%. Low high-school completion lines up with lower turnout, and about 66% of adults in 78076 have completed high school, in the bottom fraction of zip codes. High-crime urban areas turn out at lower rates, and 78076 sits in the top 15% on a violent-crime measure. 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.