77519 is a Republican stronghold. About 7% of voters here vote Democratic and 93% Republican.
About 86% of adults in 77519 typically vote, above the U.S. average of about 62%. Among adults in 77519, ~6% vote Democratic, ~80% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How 77519 compares
Among zip codes within 15 miles, 77519 leans more Republican than 6 of 8 neighbors.
77519 runs about 73 points more Republican than Texas as a whole.
Why 77519 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 77519, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 5% of residents in 77519 live in densely developed areas, about 30 points below the Texas average of 35%. A high white share with below-average college attainment predicts Republican voting, and 77519 fits that profile on both counts. A high family-household share predicts Republican voting, and about 81% of households in 77519 are family households, above 94% of zip codes.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 77519, TX sits in the bottom quarter nationally 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 77519 looks the way it does
Homeowners vote more often than renters. About 96% of households in 77519 own their home, about 21 points above the Texas average of 75%. Limited routine healthcare access lines up with lower turnout, and 77519 sits in the bottom quarter on routine-care measures. High high-school completion lines up with higher turnout, and about 97% of adults in 77519 have completed high school, above 88% 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.