77380 leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 59% of adults in 77380 typically vote, near the U.S. average of about 62%. Among adults in 77380, ~26% vote Democratic, ~33% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.
How 77380 compares
Among zip codes within 15 miles, 77380 leans more Republican than 13 of 30 neighbors.
Politically, 77380 sits close to the rest of Texas.
Politics vary noticeably by block within 77380. The southwest side is the most split-leaning (R+33) and the southeast side is the least split-leaning (Even), a spread of about 33 points.
Why 77380 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 77380, not a ranked or complete list of what matters most.
77380 votes Republican even though it is densely developed (about 90%, far above the Texas average of 35%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 77380, TX sits in the top quarter nationally on this measure.
Why turnout in 77380 looks the way it does
Renters vote less often than owners. About 58% of households in 77380 rent, about 33 points above the U.S. average of 25%. 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.