Morris County, NJ Political Map | Democrat & Republican Areas in Morris County

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

Morris County is a true toss-up. About 50% of voters here vote Democratic and 50% Republican.

 

About 82% of adults in Morris County typically vote, above the U.S. average of about 62%. Among adults in Morris County, ~41% vote Democratic, ~41% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.

How Morris County compares

Among counties within 50 miles, Morris County sits roughly in the middle of the political spectrum, with 15 neighbors leaning further in the place's direction and 9 leaning the other way.

Morris County runs about 6 points more Republican than New Jersey as a whole.

Politics vary noticeably by city within Morris County. The south side runs the most Democratic (D+15) and the northeast side runs the most Republican (R+12), a spread of about 27 points.

Why Morris County leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Morris County. The lean here lands roughly where demographic data alone would predict.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Morris County, 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 Morris County looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Morris County 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 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 95% of adults in Morris County have completed high school, above 92% of counties. 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.