08221 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 91% of adults in 08221 typically vote, above the U.S. average of about 62%. Among adults in 08221, ~42% vote Democratic, ~49% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How 08221 compares
Among zip codes within 15 miles, 08221 leans more Republican than 10 of 22 neighbors.
08221 runs about 13 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while 08221 is one of the few Republican-leaning pockets.
Why 08221 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 08221, not a ranked or complete list of what matters most.
08221 votes Republican even though it is densely developed (about 63%, about 27 points above the U.S. average of 36%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 75% of households in 08221 are family households, above 80% of zip codes. 08221 runs against the grain of New Jersey, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 08221, NJ sits in the top tenth 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 08221 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 08221 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 74%, about 14 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 91% of households in 08221 own their home, compared to around 70% in nearby zip codes. High high-school completion lines up with higher turnout, and about 96% of adults in 08221 have completed high school, above 85% 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.