75215 is a Democratic stronghold. About 86% of voters here vote Democratic and 14% Republican.
About 36% of adults in 75215 typically vote, below the U.S. average of about 62%. Among adults in 75215, ~31% vote Democratic, ~5% Republican, and ~64% don't vote. The map below shows estimated turnout by block group.
How 75215 compares
Among zip codes within 15 miles, 75215 leans more Democratic than 70 of 72 neighbors.
75215 runs about 85 points more Democratic than Texas as a whole. Texas leans Republican overall, while 75215 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 75215. The east side is the most Democratic-leaning (D+79) and the northwest side is the least Democratic-leaning (D+57), a spread of about 22 points.
Why 75215 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 75215, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 89% of residents in 75215 live in densely developed areas, about 52 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 52% of adults in 75215 have never been married, above 96% of zip codes. 75215 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 75215, TX sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 75215 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 75215 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 40%, about 14 points below the Texas average of 54%. Renters vote less often than owners, and about 61% of households in 75215 rent, about 36 points above the U.S. average of 25%. High-crime urban areas turn out at lower rates, and 75215 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.