79045 leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 49% of adults in 79045 typically vote, below the U.S. average of about 62%. Among adults in 79045, ~17% vote Democratic, ~32% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How 79045 compares
79045 sits in a sparsely populated area with few comparable zip codes nearby.
79045 runs about 17 points more Republican than Texas as a whole.
Politics vary noticeably by block within 79045. The west side is the most Republican-leaning (R+66) and the east side is the least Republican-leaning (R+24), a spread of about 42 points.
Why 79045 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 79045, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 11% of adults in 79045 hold a bachelor's degree, about 14 points below the Texas average of 26%. Dense places usually vote Democratic, but 79045 runs against that pattern. A high family-household share predicts Republican voting, and about 75% of households in 79045 are family households, above 80% of zip codes.
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 79045, TX does.
Why turnout in 79045 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 79045 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 43%, about 11 points below the Texas average of 54%. Low high-school completion lines up with lower turnout, and about 69% of adults in 79045 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.