Rocky Hill, New Jersey
Borough in Somerset County, New Jersey
| Census | Population |
|---|---|
| 2000 | 662 |
| 2010 | 682 |
| 2020 | 743 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: Census 2000 Summary File 1: total population, place level, state 34, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 34, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 34, retrieved November 14, 2026.
| Measure | Rocky Hill | Somerset County | New Jersey |
|---|---|---|---|
| Population | 814 | 346,203 | 9,267,014 |
| Median household income | $127,344 | $135,960 | $101,050 |
| Median age | 42.8 | 41.9 | 40.1 |
| Median home value | $608,200 | $523,900 | $427,600 |
| Bachelor’s degree or higher | 72.4% | 57.4% | 42.9% |
| Foreign-born residents | 16.1% | 27.5% | 23.5% |
| Owner-occupied homes | 75.9% | 74.5% | 63.7% |
| Mean commute to work | 25.4 minutes | 31.5 minutes | 30.9 minutes |
Source: American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.
Median household income $127,344 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.
Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 34, retrieved November 14, 2026.
- Owner occupied
- 242 units
- Renter occupied
- 77 units
- Vacancy rate
- 0%
Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.
Source: American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.
Community
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Nearby towns
- East Rocky HillCensus designated place
- KingstonCensus designated place
- Montgomery TownshipTownship
- Ten Mile RunCensus designated place
- BlawenburgCensus designated place
- HeathcoteCensus designated place
- GriggstownCensus designated place
- HarlingenCensus designated place
- Kendall ParkCensus designated place
Other towns in Somerset County
- Basking RidgeCensus designated place
- Bedminster TownshipTownship
- BedminsterCensus designated place
- Belle MeadCensus designated place
- Bernards TownshipTownship
- BernardsvilleBorough
- Blackwells MillsCensus designated place
- BlawenburgCensus designated place
- Bound BrookBorough
- Bradley GardensCensus designated place
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- Type
- Borough
- County
- Somerset County
- Land area
- 0.61 sq mi
- Water area
- 0.00 sq mi
- Population
- 755 (2024 estimate)
- Households
- 319
- Median age
- 42.8
- Median household income
- $127,344
- Median home value
- $608,200
- Median gross rent
- $1,660
- Owner-occupied homes
- 75.9%
- Bachelor’s degree or higher
- 72.4%
- Foreign-born residents
- 16.1%
- Mean commute to work
- 25.4 minutes
- Census GEOID
- 3464320
Sources: Census Gazetteer 2025: places, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 34, retrieved November 14, 2026; American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.
- ZIP codes
- 08553
- Metro area
- New York-Newark-Jersey City, NY-NJ
Sources: Census 2020 ZCTA relationship file: ZCTAs to places, retrieved November 14, 2026; Census Gazetteer 2025: metropolitan and micropolitan areas, retrieved November 14, 2026.