77327 leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 44% of adults in 77327 typically vote, below the U.S. average of about 62%. Among adults in 77327, ~13% vote Democratic, ~31% Republican, and ~56% don't vote. The map below shows estimated turnout by block group.
How 77327 compares
Among zip codes within 15 miles, 77327 leans more Republican than 1 of 4 neighbors.
77327 runs about 26 points more Republican than Texas as a whole.
Politics vary noticeably by block within 77327. The north side runs the most Democratic (D+22) and the southeast side runs the most Republican (R+86), a spread of about 107 points.
Why 77327 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 77327, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 79% of households in 77327 are family households, about 13 points above the U.S. average of 67%. Low college attainment predicts Republican voting, and 77327 sits in the bottom quarter (about 11%, below 92% of zip codes).
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 77327, TX sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 77327 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77327 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 42%, about 11 points below the Texas average of 54%. Low high-school completion lines up with lower turnout, and about 73% of adults in 77327 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.