77458 is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 79% of adults in 77458 typically vote, above the U.S. average of about 62%. Among adults in 77458, ~18% vote Democratic, ~61% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 77458 compares
Among zip codes within 15 miles, 77458 leans more Republican than 3 of 6 neighbors.
77458 runs about 40 points more Republican than Texas as a whole.
Politics vary noticeably by block within 77458. The northeast side is the most Republican-leaning (R+71) and the east side is the least Republican-leaning (R+51), a spread of about 20 points.
Why 77458 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 77458, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 8% of adults in 77458 hold a bachelor's degree, about 17 points below the Texas average of 26%. Rural areas vote Republican, and 77458 sits in the bottom quarter on density (about 4%, below 86% of zip codes). A high family-household share predicts Republican voting, and about 85% of households in 77458 are family households, above 97% of zip codes.
Population density, never-married share, and Republican lean
Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as 77458, TX does.
Why turnout in 77458 looks the way it does
Homeowners vote more often than renters. About 97% of households in 77458 own their home, about 22 points above the Texas average of 75%. Limited routine healthcare access lines up with lower turnout, and 77458 sits in the bottom quarter on routine-care measures. 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.