07104 leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.
About 39% of adults in 07104 typically vote, below the U.S. average of about 62%. Among adults in 07104, ~27% vote Democratic, ~12% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.
How 07104 compares
Among zip codes within 15 miles, 07104 leans more Democratic than 141 of 254 neighbors.
07104 runs about 32 points more Democratic than New Jersey as a whole.
Politics vary noticeably by block within 07104. The southeast side is the most Democratic-leaning (D+58) and the northeast side is the least Democratic-leaning (D+27), a spread of about 31 points.
Why 07104 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 07104, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in 07104 live in densely developed areas, about 62 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 45% of adults in 07104 have never been married, above 92% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 07104, NJ sits in the top tenth 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 07104 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 07104 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 29%, about 19 points above the New Jersey average of 10%. Renters vote less often than owners, and about 71% of households in 07104 rent, about 46 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 35% of adults in 07104 report food insecurity, above 96% 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.