Hackettstown is a town in Warren County, New Jersey, home to about 10,140 people across 3.6 square miles. Its ZIP code is 07840.
Homes sold for a median of $302 per square foot in the three months ending August 2026, a seller’s market.
Mostly Hackettstown; also Mount Olive and Allamuchy
Each card is that ZIP code’s whole market, including any part outside Hackettstown. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Hackettstown’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Newark Liberty International Airport (EWR)36 miles away |
|---|---|
| Nearest city of 250,000+ | Newark, NJ36 miles away |
| Nearest city of 1 million+ | New York, NY49 miles away |
Straight-line distances from the center of Hackettstown; 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.
Hackettstown had 10,248 residents in the 2020 census, down 1% since 2000.
It’s the 243rd largest of 565 towns in New Jersey by population.
Warren County grew from 37,781 residents in 1900 to 109,632 in 2020.
Warren County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 19°F. About 48.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Andover Aeroflex Ap, NJ weather station (12 miles away).
28,428 jobs at 2,286 businesses in Warren County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
402 doctors and other health care providers list an office in Hackettstown.
Nearest hospitals
Providers with an office here
| Primary care doctors | 44 |
|---|---|
| Specialist doctors | 78 |
| Dentists | 27 |
| Nurse practitioners and physician assistants | 53 |
| Mental health providers | 126 |
| Physical and occupational therapists | 59 |
| Optometrists | 5 |
| Chiropractors | 10 |
| Pharmacies | 16 |
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 (4 nearby)
Grocery stores (2 nearby)
Pharmacies
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 1.5 miles 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 Hackettstown Public School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Hatchery Hill Elementary SchoolHackettstown | Pre-K–1 | 283 | Public | 0.6 mi |
| Willow Grove Elementary SchoolHackettstown | 2–4 | 320 | Public | 1.1 mi |
| Hackettstown Middle SchoolHackettstown | 5–8 | 507 | Public | 0.4 mi |
| Hackettstown High SchoolHackettstown | 9–12 | 868 | Public | 0.7 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 Mount Olive, Allamuchy, Independence, Washington Township (Morris County) and Mansfield Township (Warren County).
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.