Princeton, New Jersey
Community in Mercer County, New Jersey
| Census | Population |
|---|---|
| 2000 | 14,203 |
| 2010 | 12,307 |
| 2020 | 30,681 |
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 | Princeton | Mercer County | New Jersey |
|---|---|---|---|
| Population | 30,451 | 383,286 | 9,267,014 |
| Median household income | $184,113 | $96,333 | $101,050 |
| Median age | 27.5 | 39.2 | 40.1 |
| Median home value | $1,040,400 | $351,000 | $427,600 |
| Bachelor’s degree or higher | 84.6% | 44.9% | 42.9% |
| Foreign-born residents | 29.9% | 25.7% | 23.5% |
| Owner-occupied homes | 56.0% | 61.9% | 63.7% |
| Mean commute to work | 24.1 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 $184,113 · 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
- 5,043 units
- Renter occupied
- 3,959 units
- Vacancy rate
- 7.5%
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 |
|---|---|---|---|
| Community Park School | Public | Pre-K–5 | Princeton Public School District |
| Johnson Park School | Public | Pre-K–5 | Princeton Public School District |
| Littlebrook School | Public | Pre-K–5 | Princeton Public School District |
| Princeton Charter School | Charter | K–8 | Princeton Charter School |
| Riverside School | Public | Pre-K–5 | Princeton Public School District |
| Princeton Middle School | Public | 6–8 | Princeton Public School District |
| Princeton High School | Public | 9–12 | Princeton Public School District |
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
- KingstonCensus designated place
- Rocky HillBorough
- Princeton JunctionCensus designated place
- BlawenburgCensus designated place
- Plainsboro CenterCensus designated place
- East Rocky HillCensus designated place
- Montgomery TownshipTownship
- Plainsboro TownshipTownship
- West Windsor TownshipTownship
- Lawrence TownshipTownship
Other towns in Mercer County
- East Windsor TownshipTownship
- Ewing TownshipTownship
- GrovevilleCensus designated place
- Hamilton TownshipTownship
- Hamilton SquareCensus designated place
- HightstownBorough
- Hopewell TownshipTownship
- HopewellBorough
- Lawrence TownshipTownship
- LawrencevilleCensus designated place
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- Type
- Not available
- County
- Mercer County
- Land area
- 17.9 sq mi
- Water area
- 0.47 sq mi
- Population
- 31,445 (2024 estimate)
- Households
- 9,002
- Median age
- 27.5
- Median household income
- $184,113
- Median home value
- $1,040,400
- Median gross rent
- $2,448
- Owner-occupied homes
- 56.0%
- Bachelor’s degree or higher
- 84.6%
- Foreign-born residents
- 29.9%
- Mean commute to work
- 24.1 minutes
- Census GEOID
- 3460900
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
- 08540, 08542, 08544
- 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.