All Countries
Rocky Hill, NJ
Full City Profile · New Jersey · Mercer County County
3.7
/5.0
B+
Good
814
Population
1,334/sq mi density
$127,344
Median Income
$77,165 per capita
$608,200
Home Value
$727,931 Zillow
$1,660
Median Rent
21.1% income on rent
53°F
Avg Temperature
271 sunny days/yr
69
Violent Crime/100K
926 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$127,344 median income, 4.2% unemployment
B+
Affordability
4.0 / 5.0
$608,200 home value, $1,660/mo rent
F
Safety
1.0 / 5.0
69 violent crimes/100K
A+
Education
5.0 / 5.0
72.4% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+8.7%
686 → 746
over 10 years
Annual Pop. Growth
+0.84%
Compound annual growth rate
Median Income Change
+40%
$90,972 → $127,344
nominal, not inflation-adjusted
Annual Income Growth
+3.42%
Compound annual growth rate
Population Over Time
Total population for Rocky Hill across each available Census ACS release.
Median Household Income Over Time
Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).
Projected 2030
Simple projections extrapolating the 2013–2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts — real outcomes depend on migration, policy and economic shifts.
Projected Population 2030
791
+45 from 2023 (746)
Projected Median Income 2030
$161,143
+$33,799 from 2023 ($127,344)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 686 | — | $90,972 | — |
| 2015 | 681 | -0.7% | $104,219 | +14.6% |
| 2017 | 677 | -0.6% | $112,917 | +8.3% |
| 2019 | 671 | -0.9% | $111,688 | -1.1% |
| 2021 | 736 | +9.7% | $126,389 | +13.2% |
| 2023 | 746 | +1.4% | $127,344 | +0.8% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.