77568 leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 59% of adults in 77568 typically vote, near the U.S. average of about 62%. Among adults in 77568, ~32% vote Democratic, ~27% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.
How 77568 compares
Among zip codes within 15 miles, 77568 leans more Democratic than 12 of 15 neighbors.
77568 runs about 23 points more Democratic than Texas as a whole. Texas leans Republican overall, while 77568 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 77568. The north side runs the most Democratic (D+52) and the southwest side runs the most Republican (R+17), a spread of about 69 points.
Why 77568 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 77568, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 77568 is about 35%, about 37 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 33% of adults in 77568 have never been married, above 75% of zip codes. 77568 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 77568, TX sits in the top quarter nationally on this measure.
Why turnout in 77568 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77568 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.