78575 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 63% of adults in 78575 typically vote, near the U.S. average of about 62%. Among adults in 78575, ~29% vote Democratic, ~34% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How 78575 compares
Among zip codes within 15 miles, 78575 leans more Republican than 5 of 6 neighbors.
78575 runs about 5 points more Democratic than Texas as a whole.
Politics vary noticeably by block within 78575. The southwest side is the most Republican-leaning (R+17) and the north side is the least Republican-leaning (R+3), a spread of about 14 points.
Why 78575 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 78575, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 75% of households in 78575 are family households, about 8 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; 78575, TX sits in the bottom tenth nationally on this measure.
Why turnout in 78575 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 78575 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 25%, about 7 points above the Texas average of 19%. 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.