77417 leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 42% of adults in 77417 typically vote, below the U.S. average of about 62%. Among adults in 77417, ~17% vote Democratic, ~25% Republican, and ~58% don't vote. The map below shows estimated turnout by block group.
How 77417 compares
Among zip codes within 15 miles, 77417 leans more Republican than 4 of 11 neighbors.
77417 runs about 6 points more Republican than Texas as a whole.
Politics vary noticeably by block within 77417. The southwest side runs the most Democratic (D+3) and the southeast side runs the most Republican (R+50), a spread of about 53 points.
Why 77417 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 77417, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 82% of households in 77417 are family households, about 15 points above the U.S. average of 67%. Car-dependent areas vote Republican, and about 83% of residents in 77417 drive to work alone, above 81% of zip codes. Low college attainment predicts Republican voting, and 77417 sits in the bottom quarter (about 15%, below 83% of zip codes).
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 77417, TX sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 77417 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77417 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 46%, about 7 points below the Texas average of 54%. Low high-school completion lines up with lower turnout, and about 77% of adults in 77417 have completed high school, below 94% 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.