77564 is a Republican stronghold. About 10% of voters here vote Democratic and 90% Republican.
About 74% of adults in 77564 typically vote, above the U.S. average of about 62%. Among adults in 77564, ~7% vote Democratic, ~67% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How 77564 compares
Among zip codes within 15 miles, 77564 leans more Republican than 3 of 7 neighbors.
77564 runs about 67 points more Republican than Texas as a whole.
Politics vary noticeably by block within 77564. The northeast side is the most Republican-leaning (R+86) and the north side is the least Republican-leaning (R+70), a spread of about 17 points.
Why 77564 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 77564, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 84% of residents in 77564 drive to work alone, about 10 points above the U.S. average of 74%. Low college attainment predicts Republican voting, and 77564 sits in the bottom quarter (about 9%, below 96% of zip codes).
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 77564, TX sits below the national average 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 77564 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77564 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.