78263 leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 71% of adults in 78263 typically vote, above the U.S. average of about 62%. Among adults in 78263, ~22% vote Democratic, ~49% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 78263 compares
Among zip codes within 15 miles, 78263 leans more Republican than 33 of 36 neighbors.
78263 runs about 24 points more Republican than Texas as a whole.
Politics vary noticeably by block within 78263. The southeast side is the most Republican-leaning (R+46) and the north side is the least Republican-leaning (R+29), a spread of about 17 points.
Why 78263 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 78263, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 77% of households in 78263 are family households, about 11 points above the U.S. average of 67%.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; 78263, TX sits in the bottom tenth nationally on this measure.
Why turnout in 78263 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 78263 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. 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.