70129 leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 49% of adults in 70129 typically vote, below the U.S. average of about 62%. Among adults in 70129, ~35% vote Democratic, ~14% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How 70129 compares
Among zip codes within 15 miles, 70129 leans more Democratic than 9 of 24 neighbors.
70129 runs about 63 points more Democratic than Louisiana as a whole. Louisiana leans Republican overall, while 70129 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 70129. The south side runs the most Democratic (D+52) and the northeast side runs the most Republican (R+49), a spread of about 101 points.
Why 70129 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 70129, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in 70129 is about 8%, about 64 points below the U.S. average of 72%. A high never-married share predicts Democratic voting, and about 47% of adults in 70129 have never been married, above 93% of zip codes. 70129 runs against the grain of Louisiana, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 70129, LA sits in the top quarter 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 70129 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 70129 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 47%, about 8 points below the Louisiana average of 55%. Renters vote less often than owners, and about 36% of households in 70129 rent, above 82% of zip codes. High food insecurity lines up with lower turnout, and about 37% of adults in 70129 report food insecurity, above 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 Louisiana Secretary of State, Elections, 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.