78207 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 29% of adults in 78207 typically vote, below the U.S. average of about 62%. Among adults in 78207, ~20% vote Democratic, ~9% Republican, and ~71% don't vote. The map below shows estimated turnout by block group.
How 78207 compares
Among zip codes within 15 miles, 78207 leans more Democratic than 49 of 57 neighbors.
78207 runs about 50 points more Democratic than Texas as a whole. Texas leans Republican overall, while 78207 is one of the few Democratic-leaning pockets.
Why 78207 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 78207, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 78207 live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 48% of adults in 78207 have never been married, above 94% of zip codes. 78207 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 78207, TX sits in the top tenth nationally on this measure.
Why turnout in 78207 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 78207 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 34%, about 20 points below the Texas average of 54%. Renters vote less often than owners, and about 59% of households in 78207 rent, about 34 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 64% of adults in 78207 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.