77964 is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.
About 68% of adults in 77964 typically vote, above the U.S. average of about 62%. Among adults in 77964, ~10% vote Democratic, ~58% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How 77964 compares
77964 sits in a sparsely populated area with few comparable zip codes nearby.
77964 runs about 57 points more Republican than Texas as a whole.
Politics vary noticeably by block within 77964. The east side is the most Republican-leaning (R+79) and the north side is the least Republican-leaning (R+65), a spread of about 14 points.
Why 77964 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 77964. The lean here lands roughly where demographic data alone would predict.
Never-married share and voter turnout
Places with a low never-married share tend to turn out at a higher rate; 77964, TX sits in the bottom quarter nationally on this measure.
Why turnout in 77964 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77964 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.