77375 leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 66% of adults in 77375 typically vote, near the U.S. average of about 62%. Among adults in 77375, ~26% vote Democratic, ~40% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How 77375 compares
Among zip codes within 15 miles, 77375 leans more Republican than 21 of 31 neighbors.
77375 runs about 9 points more Republican than Texas as a whole.
Politics vary noticeably by block within 77375. The northwest side is the most Republican-leaning (R+39) and the southeast side is the least Republican-leaning (R+15), a spread of about 24 points.
Why 77375 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 77375, not a ranked or complete list of what matters most.
77375 votes Republican even though it is densely developed (about 82%, far above the Texas average of 35%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 76% of households in 77375 are family households, above 82% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 77375, TX sits in the top quarter nationally on this measure.
Why turnout in 77375 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77375 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.