Monmouth Junction, New Jersey
Census designated place in Middlesex County, New Jersey
| Census | Population |
|---|---|
| 2000 | 2,721 |
| 2010 | 2,887 |
| 2020 | 8,895 |
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 | Monmouth Junction | Middlesex County | New Jersey |
|---|---|---|---|
| Population | 9,457 | 861,535 | 9,267,014 |
| Median household income | $125,892 | $109,028 | $101,050 |
| Median age | 40.2 | 39.4 | 40.1 |
| Median home value | $497,100 | $439,300 | $427,600 |
| Bachelor’s degree or higher | 72.9% | 45.1% | 42.9% |
| Foreign-born residents | 48.7% | 34.7% | 23.5% |
| Owner-occupied homes | 63.4% | 63.5% | 63.7% |
| Mean commute to work | 34.6 minutes | 31.9 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 $125,892 · 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
- 2,261 units
- Renter occupied
- 1,306 units
- Vacancy rate
- 1.6%
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 |
|---|---|---|---|
| Monmouth Junction Elementary School | Public | K–5 | South Brunswick School District |
| Crossroads North Middle School | Public | 6–8 | South Brunswick School District |
| Crossroads South Middle School | Public | 6–8 | South Brunswick School District |
| South Brunswick High School | Public | 9–12 | South Brunswick 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
- HeathcoteCensus designated place
- South Brunswick TownshipTownship
- Kendall ParkCensus designated place
- DaytonCensus designated place
- Princeton MeadowsCensus designated place
- Plainsboro TownshipTownship
- DeansCensus designated place
- KingstonCensus designated place
- Plainsboro CenterCensus designated place
- Ten Mile RunCensus designated place
Other towns in Middlesex County
- AvenelCensus designated place
- BrownvilleCensus designated place
- CarteretBorough
- ClearbrookCensus designated place
- ColoniaCensus designated place
- ConcordiaCensus designated place
- Cranbury TownshipTownship
- CranburyCensus designated place
- DaytonCensus designated place
- DeansCensus designated place
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- Type
- Census designated place
- County
- Middlesex County
- Within
- South Brunswick Township
- Land area
- 4.38 sq mi
- Water area
- 0.03 sq mi
- Population
- 9,457 (2019-2023 estimate)
- Households
- 3,567
- Median age
- 40.2
- Median household income
- $125,892
- Median home value
- $497,100
- Median gross rent
- $1,880
- Owner-occupied homes
- 63.4%
- Bachelor’s degree or higher
- 72.9%
- Foreign-born residents
- 48.7%
- Mean commute to work
- 34.6 minutes
- Census GEOID
- 3447190
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
- 08852
- 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.