Neptune leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 69% of adults in Neptune typically vote, above the U.S. average of about 62%. Among adults in Neptune, ~49% vote Democratic, ~20% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How Neptune compares
Among cities within 25 miles, Neptune is the most Democratic-leaning.
Neptune runs about 37 points more Democratic than New Jersey as a whole.
Politics vary noticeably by neighborhood within Neptune. The northeast side runs the most Democratic (D+68) and the southwest side runs the most Republican (R+8), a spread of about 76 points.
Why Neptune 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 Neptune, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 88% of residents in Neptune live in densely developed areas, about 51 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 37% of adults in Neptune have never been married, above 91% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Neptune, 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 Neptune looks the way it does
Turnout in Neptune sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Shark River Hills, NJ R+4
- Neptune City, NJ D+4
- Asbury Park, NJ D+36
- Wanamassa, NJ D+3
- Bradley Beach, NJ D+16
- Ocean Grove, NJ D+34
- Avon-by-the-Sea, NJ R+12
- Interlaken, NJ R+11
- Belmar, NJ R+15
- Allenhurst, NJ R+29
Cities with Similar Populations
- Westborough, MA D+31
- Lake Placid, FL R+41
- Broomall, PA R+6
- Pittsboro, NC Even
- St. Joseph, MI Even
- Washington, MO R+40
- Beaver Dam, WI R+13
- Milford, MI R+15
- Dolton, IL D+82
- North Tustin, CA R+9
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.