75137 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 57% of adults in 75137 typically vote, near the U.S. average of about 62%. Among adults in 75137, ~39% vote Democratic, ~18% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How 75137 compares
Among zip codes within 15 miles, 75137 leans more Democratic than 28 of 51 neighbors.
75137 runs about 50 points more Democratic than Texas as a whole. Texas leans Republican overall, while 75137 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 75137. The east side is the most Democratic-leaning (D+56) and the south side is the least Democratic-leaning (D+25), a spread of about 31 points.
Why 75137 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 75137, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 93% of residents in 75137 live in densely developed areas, about 56 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 37% of adults in 75137 have never been married, above 83% of zip codes. 75137 runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 75137, TX sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 75137 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 75137 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. 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.