77050 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 47% of adults in 77050 typically vote, below the U.S. average of about 62%. Among adults in 77050, ~32% vote Democratic, ~15% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.
How 77050 compares
Among zip codes within 15 miles, 77050 leans more Democratic than 41 of 60 neighbors.
77050 runs about 49 points more Democratic than Texas as a whole. Texas leans Republican overall, while 77050 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 77050. The north side is the most Democratic-leaning (D+77) and the northeast side is the least Democratic-leaning (Even), a spread of about 75 points.
Why 77050 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 77050, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 77050 is fewer than 1%, about 72 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 40% of adults in 77050 have never been married, above 87% of zip codes. 77050 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
High-school completion, developed land, and voter turnout
Places that combine low high-school-completion share and a heavily developed built environment tend to turn out at a lower rate, as 77050, TX does.
Why turnout in 77050 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77050 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 31%, about 23 points below the Texas average of 54%. Renters vote less often than owners, and about 39% of households in 77050 rent, above 86% of zip codes. Low high-school completion lines up with lower turnout, and about 66% of adults in 77050 have completed high school, in the bottom fraction 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.