77028 is a Democratic stronghold. About 85% of voters here vote Democratic and 15% Republican.
About 41% of adults in 77028 typically vote, below the U.S. average of about 62%. Among adults in 77028, ~35% vote Democratic, ~6% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.
How 77028 compares
Among zip codes within 15 miles, 77028 leans more Democratic than 72 of 75 neighbors.
77028 runs about 83 points more Democratic than Texas as a whole. Texas leans Republican overall, while 77028 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 77028. The northwest side is the most Democratic-leaning (D+73) and the east side is the least Democratic-leaning (D+56), a spread of about 18 points.
Why 77028 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 77028, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 77028 is about 2%, about 71 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 48% of adults in 77028 have never been married, above 94% of zip codes. 77028 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 77028, TX sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 77028 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77028 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 36%, about 17 points below the Texas average of 54%. Renters vote less often than owners, and about 38% of households in 77028 rent, above 85% of zip codes. Low high-school completion lines up with lower turnout, and about 73% of adults in 77028 have completed high school, below 97% 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.