78659 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 84% of adults in 78659 typically vote, above the U.S. average of about 62%. Among adults in 78659, ~22% vote Democratic, ~62% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How 78659 compares
Among zip codes within 15 miles, 78659 leans more Republican than 4 of 5 neighbors.
78659 runs about 35 points more Republican than Texas as a whole.
Politics vary noticeably by block within 78659. The east side is the most Republican-leaning (R+59) and the north side is the least Republican-leaning (R+41), a spread of about 18 points.
Why 78659 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 78659. The lean here lands roughly where demographic data alone would predict.
Renting and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 78659, TX sits in the bottom tenth nationally on this measure.
Why turnout in 78659 looks the way it does
Homeowners vote more often than renters. About 93% of households in 78659 own their home, about 18 points above the Texas average of 75%. Limited routine healthcare access lines up with lower turnout, and 78659 sits in the bottom quarter on routine-care measures. 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.