Spring Lake Heights leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 83% of adults in Spring Lake Heights typically vote, above the U.S. average of about 62%. Among adults in Spring Lake Heights, ~39% vote Democratic, ~44% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Spring Lake Heights compares
Among cities within 25 miles, Spring Lake Heights leans more Republican than 24 of 114 neighbors.
Spring Lake Heights runs about 11 points more Republican than New Jersey as a whole.
Politics vary noticeably by neighborhood within Spring Lake Heights. The northwest side runs the most Democratic (D+2) and the southeast side runs the most Republican (R+13), a spread of about 16 points.
Why Spring Lake Heights 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 Spring Lake Heights, not a ranked or complete list of what matters most.
Spring Lake Heights votes Republican even though it is densely developed (about 97%, far above the New Jersey average of 61%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Spring Lake Heights, NJ sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Spring Lake Heights looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Spring Lake Heights 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%. High high-school completion lines up with higher turnout, and about 96% of adults in Spring Lake Heights have completed high school, above 83% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Spring Lake, NJ R+13
- Sea Girt, NJ R+19
- Belmar, NJ R+15
- Lake Como, NJ D+11
- Manasquan, NJ R+18
- Shark River Hills, NJ R+4
- Avon-by-the-Sea, NJ R+12
- Neptune City, NJ D+4
- Allenwood, NJ R+29
- Brielle, NJ R+19
Cities with Similar Populations
- Grantville, GA R+36
- Marion, TX R+40
- Wolcottville, IN R+58
- Esko, MN R+16
- Licking, MO R+61
- Anza, CA R+20
- Calera, OK R+62
- Apison, TN R+42
- Larned, KS R+46
- Tobaccoville, NC R+33
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.