78746 leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 89% of adults in 78746 typically vote, above the U.S. average of about 62%. Among adults in 78746, ~53% vote Democratic, ~36% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How 78746 compares
Among zip codes within 15 miles, 78746 leans more Democratic than 12 of 47 neighbors.
78746 runs about 33 points more Democratic than Texas as a whole. Texas leans Republican overall, while 78746 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 78746. The southeast side is the most Democratic-leaning (D+38) and the northwest side is the least Democratic-leaning (D+4), a spread of about 34 points.
Why 78746 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 78746, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 83% of adults in 78746 hold a bachelor's degree, about 55 points above the U.S. average of 28%. 78746 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; 78746, TX sits in the top quarter 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 78746 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 78746 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 74%, about 14 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and more than 99% of adults in 78746 have completed high school, in the top fraction 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.