Hamilton Square, New Jersey
Census designated place in Mercer County, New Jersey
| Census | Population |
|---|---|
| 2010 | 12,784 |
| 2020 | 12,679 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: 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 | Hamilton Square | Mercer County | New Jersey |
|---|---|---|---|
| Population | 11,643 | 383,286 | 9,267,014 |
| Median household income | $135,694 | $96,333 | $101,050 |
| Median age | 46.2 | 39.2 | 40.1 |
| Median home value | $376,900 | $351,000 | $427,600 |
| Bachelor’s degree or higher | 51.1% | 44.9% | 42.9% |
| Foreign-born residents | 11.4% | 25.7% | 23.5% |
| Owner-occupied homes | 94.4% | 61.9% | 63.7% |
| Mean commute to work | 24.7 minutes | 27.6 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 $135,694 · 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
- 4,085 units
- Renter occupied
- 241 units
- Vacancy rate
- 2.5%
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.
| School | Type | Grades | District |
|---|---|---|---|
| Alexander Elementary School | Public | K–5 | Hamilton Township Public School District |
| Emily C. Reynolds Middle School | Public | 6–8 | Hamilton Township Public School District |
| Richard C Crockett Middle School | Public | 6–8 | Hamilton Township Public School District |
| Hamilton East - Steinert | Public | 9–12 | Hamilton Township Public School District |
| MCVS Assunpink Shared Time Center/Rubino | Career and technical | 7–12 | Area Vocational Technical School District of Mercer County |
| Mercer County Technical School Health Sciences Academy | Career and technical | 9–12 | Area Vocational Technical School District of Mercer County |
Open public schools in the NCES directory for 2023–2024, placed by their listed location; private schools are not in the source. Enrollment and ratings are not shown.
Sources: NCES Common Core of Data, public school directory 2023–2024, retrieved November 14, 2026; NCES EDGE public school geocodes 2024–2025, retrieved November 14, 2026.
Community
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Nearby towns
- Robbinsville CenterCensus designated place
- Hamilton TownshipTownship
- MercervilleCensus designated place
- YardvilleCensus designated place
- Robbinsville TownshipTownship
- White HorseCensus designated place
- GrovevilleCensus designated place
- WindsorCensus designated place
- AllentownBorough
- West Windsor TownshipTownship
Other towns in Mercer County
- East Windsor TownshipTownship
- Ewing TownshipTownship
- GrovevilleCensus designated place
- Hamilton TownshipTownship
- HightstownBorough
- Hopewell TownshipTownship
- HopewellBorough
- Lawrence TownshipTownship
- LawrencevilleCensus designated place
- MercervilleCensus designated place
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- Type
- Census designated place
- County
- Mercer County
- Within
- Hamilton Township
- Land area
- 4.28 sq mi
- Water area
- 0.06 sq mi
- Population
- 11,643 (2019-2023 estimate)
- Households
- 4,326
- Median age
- 46.2
- Median household income
- $135,694
- Median home value
- $376,900
- Median gross rent
- $1,817
- Owner-occupied homes
- 94.4%
- Bachelor’s degree or higher
- 51.1%
- Foreign-born residents
- 11.4%
- Mean commute to work
- 24.7 minutes
- Census GEOID
- 3429370
Sources: Census Gazetteer 2025: places, retrieved November 14, 2026; American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.
- ZIP codes
- 08690, 08691
- Metro area
- Trenton-Princeton, 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.