Each edition grades its towns against each other only.
71% of adults 25 and older hold a bachelor’s degree or more in Rocky Hill, against 45% in New Jersey’s towns and 29% across U.S. towns. Only one of the 469 New Jersey towns we compare has a lower share of working residents who work in town than Rocky Hill. 31% of the land in Rocky Hill is conserved, above both New Jersey’s towns (11%) and U.S. towns (4.3%). Rocky Hill Historic District is on the National Register of Historic Places. Rocky Hill has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
Where Rocky Hill beats most towns.
In a town this size, neighbors are the best guide. Ask them anything.
Census counts: 354 in 1900, a low of 305 in 1920, 743 in 2020. The archive holds 7 old photos and papers going back to 1850 and 7 maps from 1888 on.
1 place on the National Register of Historic Places.
Museums, parks, gardens and other places to visit around Rocky Hill. Close and well known come first.
Big draw37 mi BeachConey Island
Big draw39 mi MuseumNational September 11 Memorial & Museum
Big draw21 mi Theme parkSix Flags Great Adventure2.2M visitors a year
Big draw40 mi Stadium & arenaBarclays Center
Big draw35 mi MuseumLynnewood Hall
35 mi Stadium & arenaSports Illustrated StadiumConey Island: OptimumPx, Public domain · National September 11 Memorial & Museum: Paul Sableman, CC BY 2.0 · Six Flags Great Adventure: Unknown, CC BY-SA 2.5 · Barclays Center: Ajay Suresh from New York, NY, USA, CC BY 2.0 · Lynnewood Hall: Shuvaev, CC BY-SA 3.0 · Sports Illustrated Stadium: Sam Szapucki, CC BY 2.0
Who provides power, water and the rest in Rocky Hill, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.
Ordered by what stands out in Rocky Hill.
There are 3.0 miles of trail across 2 parks and preserves. The biggest place to walk is Van Horne Park, 100 acres with 1.8 miles of trail.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Van Horne Park | 1.8 mi | 100 |
| 2. Panicaro Park | — | 2 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Half of commuters travel less than 12 miles. Rocky Hill’s typical household income is $148,000. Only 1% of working residents stay in Rocky Hill for work; the rest commute out. Between 2013 and 2023, jobs in Rocky Hill dropped by 55, to 247.
| Rocky Hill | New Jersey towns | U.S. towns | |
|---|---|---|---|
| Median household income | $148,000 | $113,000 | $80,000 |
| Average trip to work | 23 minutes | 30 minutes | 25 minutes |
| Below the poverty line | 3.9% | 6.1% | 9.6% |
Census LEHD 2023 · ACS
In Rocky Hill, the going rate for rent is $1,799 a month. Typical home values rose 4.1% in the year to September 2026. Just over three quarters of Rocky Hill households own their home.
| Rocky Hill | New Jersey towns | U.S. towns | |
|---|---|---|---|
| Median rent | $1,799 a month | $1,778 a month | $1,185 a month |
| Households that own their home | 76% | 77% | 73% |
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
In July, afternoons reach 87°; in January, nights fall to 23°, and about 21 inches of snow falls in a winter.
NOAA U.S. Climate Normals, 1991–2020
Federal aid has come to Rocky Hill households in 6 declared disasters; the latest was in 2021. Storm and flood damage is expected to run higher than in 65% of U.S. communities. Four fifths of the town’s expected losses from natural hazards come from inland flooding. Also worth knowing: the town has had 12 paid flood insurance claims since 1999.
FEMA disaster declarations and aid · FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
The share of adults in Rocky Hill who report frequent physical distress: 10%. Of 32 CDC measures, Rocky Hill beats the New Jersey average on 17 and trails it on 1. 7.3% of adults in Rocky Hill smoke cigarettes; 17% get no exercise outside work.
| Rocky Hill | New Jersey towns | U.S. towns | |
|---|---|---|---|
| Frequent mental distress (CDC PLACES) | 13% | 15% | 17% |
| Smoke cigarettes (CDC PLACES) | 7.3% | 11% | 14% |
| Get no exercise (CDC PLACES) | 17% | 22% | 25% |
| Frequent physical distress (CDC PLACES) | 10% | 12% | 14% |
| What stands out | Rocky Hill | NJ |
|---|---|---|
| Fewer older adults who have lost all their teeth | 3.5% | 9.6% |
| Fewer adults facing food insecurity | 6.4% | 14.3% |
| More adults who have had cancer | 9.8% | 7.5% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
10 within 15 miles of the center of Rocky Hill
About 8 of every 100 Rocky Hill residents are enrolled in college, against 6 across New Jersey.
Where Rocky Hill’s working residents go each day. Line width shows the share.
Census LEHD 2023
Borough in Somerset County, New Jersey, US
Rocky Hill is a borough in Somerset County, in the U.S. state of New Jersey. Named for the Rocky Hill Ridge, this historic village is nestled within the heart of the Raritan Valley region, located alongside the course of the Millstone River. As of the 2020 United States census, the borough's population was 743, an increase of 61 (+8.9%) from the 2010 census count of 682, which in turn reflected an increase of 20 (+3.0%) from the 662 counted in the 2000 census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Rocky Hill has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
2 notable people were born here, including John M. Berrien and Anthony Cassar.
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