78701 leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.
About 62% of adults in 78701 typically vote, near the U.S. average of about 62%. Among adults in 78701, ~43% vote Democratic, ~19% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How 78701 compares
Among zip codes within 15 miles, 78701 leans more Democratic than 29 of 47 neighbors.
78701 runs about 55 points more Democratic than Texas as a whole. Texas leans Republican overall, while 78701 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 78701. The north side is the most Democratic-leaning (D+60) and the south side is the least Democratic-leaning (D+32), a spread of about 28 points.
Why 78701 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 78701, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 92% of residents in 78701 live in densely developed areas, about 56 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 78701 sits in the top quarter (about 81%, in the top fraction of zip codes). 78701 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 78701, TX sits in the top tenth nationally on this measure.
Why turnout in 78701 looks the way it does
Renters vote less often than owners. About 64% of households in 78701 rent, about 39 points above the U.S. average of 25%. 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.