Dunellen is a borough in Middlesex County, New Jersey, home to about 7,911 people across 1.1 square miles. Its ZIP code is 08812.
Homes sold for a median of $356 per square foot in the three months ending August 2026, a seller’s market.
Mostly Dunellen; also Green Brook and Plainfield
Each card is that ZIP code’s whole market, including any part outside Dunellen. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Newark Liberty International Airport (EWR)17 miles away |
|---|---|
| Nearest city of 250,000+ | Newark, NJ18 miles away |
| Nearest city of 1 million+ | New York, NY28 miles away |
Straight-line distances from the center of Dunellen; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Dunellen had 7,637 residents in the 2020 census, up 12% since 2000.
It’s the 298th largest of 565 towns in New Jersey by population.
Middlesex County grew from 79,762 residents in 1900 to 863,162 in 2020.
Middlesex County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 24°F. About 48.7 inches of rain and melted snow fall in a typical year, with about 21 inches of snow.
Source: NOAA 1991–2020 climate normals, Plainfield, NJ weather station (3 miles away).
434,143 jobs at 22,314 businesses in Middlesex County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
88 doctors and other health care providers list an office in Dunellen.
Nearest hospitals
Providers with an office here
| Primary care doctors | 18 |
|---|---|
| Specialist doctors | 2 |
| Dentists | 6 |
| Nurse practitioners and physician assistants | 32 |
| Mental health providers | 12 |
| Physical and occupational therapists | 7 |
| Optometrists | 5 |
| Chiropractors | 6 |
| Pharmacies | 4 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (9 nearby)
Grocery stores (2 nearby)
Pharmacies
Libraries (1 nearby)
Museums
Theaters and performance venues
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Green Brook Township Public School District, Dunellen Public School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Irene E. Feldkirchner Elementary SchoolGreen Brook | Pre-K–4 | 404 | Public | 1.0 mi |
| John P. Faber Elementary SchoolDunellen | Pre-K–5 | 621 | Public | 0.6 mi |
| Green Brook Middle SchoolGreen Brook | 5–8 | 304 | Public | 0.9 mi |
| Lincoln Middle SchoolDunellen | 6–8 | 333 | Public | 0.2 mi |
| Dunellen High SchoolDunellen | 9–12 | 409 | Public | 0.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Green Brook and Plainfield.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.