70803 leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 25% of adults in 70803 typically vote, below the U.S. average of about 62%. Among adults in 70803, ~17% vote Democratic, ~8% Republican, and ~75% don't vote. The map below shows estimated turnout by block group.
How 70803 compares
Among zip codes within 15 miles, 70803 leans more Democratic than 18 of 28 neighbors.
70803 runs about 58 points more Democratic than Louisiana as a whole. Louisiana leans Republican overall, while 70803 is one of the few Democratic-leaning pockets.
Why 70803 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 70803, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 74% of adults in 70803 hold a bachelor's degree, about 45 points above the U.S. average of 28%. Dense areas vote Democratic, and 70803 sits in the top fifth on density (about 88%, above 86% of zip codes). 70803 runs against the grain of Louisiana, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 70803, LA sits in the top tenth nationally on this measure.
Why turnout in 70803 looks the way it does
Renters vote less often than owners. About 87% of households in 70803 rent, about 62 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 37% of adults in 70803 report food insecurity, above 97% of zip codes. High-crime urban areas turn out at lower rates, and 70803 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 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.