Grenloch leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 86% of adults in Grenloch typically vote, above the U.S. average of about 62%. Among adults in Grenloch, ~39% vote Democratic, ~47% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Grenloch compares
Among cities within 25 miles, Grenloch leans more Republican than 159 of 222 neighbors.
Grenloch runs about 15 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while Grenloch is one of the few Republican-leaning pockets.
Why Grenloch 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 Grenloch, not a ranked or complete list of what matters most.
Grenloch votes Republican even though it is densely developed (about 72%, modestly above the New Jersey average of 61%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 85% of households in Grenloch are family households, above 97% of cities. Grenloch runs against the grain of New Jersey, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Grenloch, NJ sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Grenloch looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Grenloch 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 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in Grenloch own their home, compared to around 70% in nearby cities. High high-school completion lines up with higher turnout, and about 96% of adults in Grenloch have completed high school, above 80% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Blackwood, NJ D+2
- Sewell, NJ R+9
- Pine Hill, NJ D+26
- Clementon, NJ D+35
- Laurel Springs, NJ D+11
- Stratford, NJ D+12
- Glendora, NJ R+4
- Hi-Nella, NJ D+20
- Somerdale, NJ D+17
- Pitman, NJ Even
Cities with Similar Populations
- Hubbardston, MI R+48
- Carters Creek, TN R+50
- Crystal Lakes, MO R+55
- Waxia, LA R+34
- Baskin, LA R+85
- Turkey Ford, OK R+65
- Turney, MO R+57
- Pierson, IA R+58
- Nassawadox, VA D+9
- Richmond, KS R+57
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.