08640 leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 39% of adults in 08640 typically vote, below the U.S. average of about 62%. Among adults in 08640, ~21% vote Democratic, ~18% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.
How 08640 compares
Among zip codes within 15 miles, 08640 leans more Democratic than 18 of 29 neighbors.
Politically, 08640 sits close to the rest of New Jersey.
Politics vary noticeably by block within 08640. The north side runs the most Democratic (D+26) and the southwest side runs the most Republican (R+22), a spread of about 48 points.
Why 08640 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 08640, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 53% of adults in 08640 have never been married, well above similar-sized zip codes (around 30%).
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 08640, NJ sits above the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 08640 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 08640 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and more than 99% of households in 08640 rent, compared to around 25% in nearby zip codes. High-crime urban areas turn out at lower rates, and 08640 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 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.