Rumson, NJ Political Map | Democrat & Republican Areas in Rumson

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

Rumson leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.

 

About 94% of adults in Rumson typically vote, above the U.S. average of about 62%. Among adults in Rumson, ~43% vote Democratic, ~51% Republican, and ~6% don't vote. The map below shows estimated turnout by block group.

How Rumson compares

Among cities within 25 miles, Rumson leans more Republican than 55 of 124 neighbors.

Rumson runs about 15 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while Rumson is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Rumson. The north side runs the most Democratic (Even) and the southwest side runs the most Republican (R+19), a spread of about 19 points.

Why Rumson 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 Rumson, not a ranked or complete list of what matters most.

Rumson votes Republican even though it is densely developed (about 63%, about 26 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 79% of households in Rumson are family households, above 87% of cities. Rumson 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; Rumson, 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 Rumson looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Rumson 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 78%, about 18 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in Rumson own their home, about 19 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 99% of adults in Rumson have completed high school, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.

All Local Stats

Home Services

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.