70820 leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.
About 37% of adults in 70820 typically vote, below the U.S. average of about 62%. Among adults in 70820, ~23% vote Democratic, ~15% Republican, and ~62% don't vote. The map below shows estimated turnout by block group.
How 70820 compares
Among zip codes within 15 miles, 70820 leans more Democratic than 15 of 28 neighbors.
70820 runs about 43 points more Democratic than Louisiana as a whole. Louisiana leans Republican overall, while 70820 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 70820. The southeast side runs the most Democratic (D+38) and the west side runs the most Republican (R+6), a spread of about 44 points.
Why 70820 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 70820, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 50% of adults in 70820 hold a bachelor's degree, about 22 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 68% of adults in 70820 have never been married, in the top fraction of zip codes. 70820 runs against the grain of Louisiana, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 70820, LA sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 70820 looks the way it does
Renters vote less often than owners. About 63% of households in 70820 rent, about 38 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 25% of adults in 70820 report food insecurity, above 89% 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.