Gloucester County is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 80% of adults in Gloucester County typically vote, above the U.S. average of about 62%. Among adults in Gloucester County, ~39% vote Democratic, ~41% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How Gloucester County compares
Among counties within 50 miles, Gloucester County sits roughly in the middle of the political spectrum, with 12 neighbors leaning further in the place's direction and 3 leaning the other way.
Gloucester County runs about 8 points more Republican than New Jersey as a whole.
Politics vary noticeably by city within Gloucester County. The south side runs the most Democratic (D+14) and the southwest side runs the most Republican (R+16), a spread of about 30 points.
Why Gloucester County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Gloucester 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; Gloucester 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 Gloucester County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Gloucester 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 68%, about 8 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 81% of households in Gloucester County own their home, above 85% of counties. High high-school completion lines up with higher turnout, and about 94% of adults in Gloucester County have completed high school, above 84% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Camden County, NJ D+30
- Salem County, NJ R+12
- Delaware County, PA D+27
- Philadelphia County, PA D+56
- Cumberland County, NJ D+7
- Burlington County, NJ D+16
- New Castle County, DE D+33
- Montgomery County, PA D+21
- Chester County, PA D+14
- Bucks County, PA Even
Counties with Similar Populations
- St. Louis City, MO D+65
- Cumberland County, ME D+29
- Greene County, MO R+18
- Clayton County, GA D+68
- Ottawa County, MI R+16
- Dutchess County, NY D+8
- Cleveland County, OK R+14
- Chatham County, GA D+26
- Thurston County, WA D+19
- McHenry County, IL R+5
All Local Stats
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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.