77023 leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 42% of adults in 77023 typically vote, below the U.S. average of about 62%. Among adults in 77023, ~27% vote Democratic, ~15% Republican, and ~58% don't vote. The map below shows estimated turnout by block group.
How 77023 compares
Among zip codes within 15 miles, 77023 leans more Democratic than 46 of 82 neighbors.
77023 runs about 42 points more Democratic than Texas as a whole. Texas leans Republican overall, while 77023 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 77023. The northwest side is the most Democratic-leaning (D+38) and the southwest side is the least Democratic-leaning (D+18), a spread of about 20 points.
Why 77023 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 77023, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 77023 live in densely developed areas, about 63 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 46% of adults in 77023 have never been married, above 93% of zip codes. 77023 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 77023, TX sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 77023 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77023 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%. Renters vote less often than owners, and about 50% of households in 77023 rent, about 25 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 77023 sits in the top 15% on a violent-crime measure. 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.