70091 leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 64% of adults in 70091 typically vote, near the U.S. average of about 62%. Among adults in 70091, ~18% vote Democratic, ~46% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 70091 compares
70091 sits in a sparsely populated area with few comparable zip codes nearby.
70091 runs about 23 points more Republican than Louisiana as a whole.
Politics vary noticeably by block within 70091. The southeast side runs the most Democratic (D+72) and the north side runs the most Republican (R+64), a spread of about 136 points.
Why 70091 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 70091, not a ranked or complete list of what matters most.
Rural areas vote Republican. Fewer than 1% of residents in 70091 live in densely developed areas, about 24 points below the Louisiana average of 25%. A high family-household share predicts Republican voting, and about 88% of households in 70091 are family households, in the top fraction of zip codes.
Population density and Republican lean
Places with low population density tend to lean Republican; 70091, LA sits in the bottom tenth nationally on this measure.
Why turnout in 70091 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 70091 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 15 points below the Louisiana average of 55%. 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.