08401 leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.
About 44% of adults in 08401 typically vote, below the U.S. average of about 62%. Among adults in 08401, ~31% vote Democratic, ~13% Republican, and ~56% don't vote. The map below shows estimated turnout by block group.
How 08401 compares
Among zip codes within 15 miles, 08401 leans more Democratic than 15 of 16 neighbors.
08401 runs about 34 points more Democratic than New Jersey as a whole.
Politics vary noticeably by block within 08401. The north side is the most Democratic-leaning (D+78) and the south side is the least Democratic-leaning (D+14), a spread of about 64 points.
Why 08401 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 08401, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 78% of residents in 08401 live in densely developed areas, about 42 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 48% of adults in 08401 have never been married, above 94% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 08401, NJ sits in the top tenth nationally on this measure.
Why turnout in 08401 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 08401 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 44%, about 23 points below the New Jersey average of 68%. Renters vote less often than owners, and about 69% of households in 08401 rent, compared to around 24% in nearby zip codes. High food insecurity lines up with lower turnout, and about 38% of adults in 08401 report food insecurity, above 98% 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 New Jersey Division of 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.