Roselle Park, NJ Political Map | Democrat & Republican Areas in Roselle Park

By the BestNeighborhood data science team. Last updated May 2026.

Roselle Park leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.

 

About 59% of adults in Roselle Park typically vote, near the U.S. average of about 62%. Among adults in Roselle Park, ~31% vote Democratic, ~28% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.

How Roselle Park compares

Among cities within 25 miles, Roselle Park leans more Democratic than 144 of 258 neighbors.

Politically, Roselle Park sits close to the rest of New Jersey.

Politics vary noticeably by neighborhood within Roselle Park. The south side runs the most Democratic (D+14) and the north side runs the most Republican (Even), a spread of about 15 points.

Why Roselle Park leans the way it does

This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Roselle Park, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in Roselle Park live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Roselle Park sits in the top quarter (about 40%, above 87% of cities). A high never-married share predicts Democratic voting, and about 36% of adults in Roselle Park have never been married, above 90% of cities.

Population density and Democratic lean

Places with high population density tend to lean Democratic; Roselle Park, NJ sits in the top tenth nationally on this measure.

Why turnout in Roselle Park looks the way it does

Renters vote less often than owners. About 39% of households in Roselle Park rent, about 14 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 5% of homes in Roselle Park have more than one occupant per room, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.

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.