78116 is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 71% of adults in 78116 typically vote, above the U.S. average of about 62%. Among adults in 78116, ~11% vote Democratic, ~60% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 78116 compares
Among zip codes within 15 miles, 78116 leans more Republican than 2 of 5 neighbors.
78116 runs about 54 points more Republican than Texas as a whole.
Why 78116 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 78116. The lean here lands roughly where demographic data alone would predict.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 78116, TX sits in the bottom tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 78116 looks the way it does
Homeowners vote more often than renters. About 94% of households in 78116 own their home, about 19 points above the Texas average of 75%. Limited routine healthcare access lines up with lower turnout, and 78116 sits in the bottom quarter on routine-care measures. High high-school completion lines up with higher turnout, and about 96% of adults in 78116 have completed high school, above 83% 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.