Mansfield Township (Warren County) is a township in Warren County, New Jersey, home to about 7,778 people across 30 square miles. Its ZIP code is 07865, and parts of 07838, 07840 and 07863 are in Mansfield Township (Warren County) too.
Homes sold for a median of $408 per square foot in the three months ending August 2026, a balanced market.
Mostly Mansfield Township (Warren County); also Washington Township (Morris County) and Lebanon Township
Mostly Independence; part is in Mansfield Township (Warren County)
Mostly Hackettstown; part is in Mansfield Township (Warren County)
Mostly Oxford; part is in Mansfield Township (Warren County)
Each card is that ZIP code’s whole market, including any part outside Mansfield Township (Warren County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Mansfield Township (Warren County)’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)40 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)29 miles away |
| Nearest city of 250,000+ | Newark, NJ40 miles away |
| Nearest city of 1 million+ | New York, NY53 miles away |
Straight-line distances from the center of Mansfield Township (Warren County); 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.
Mansfield Township (Warren County) had 7,781 residents in the 2020 census, up 17% since 2000.
It’s the 302nd 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 18°F. About 48.3 inches of rain and melted snow fall in a typical year, with about 23 inches of snow.
Source: NOAA 1991–2020 climate normals, Belvidere Brg, NJ weather station (8 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).
5 doctors and other health care providers list an office in Mansfield Township (Warren County).
Nearest hospitals
Providers with an office here
| Mental health providers | 5 |
|---|
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 (3 nearby)
Grocery stores
Pharmacies
Libraries
Museums (1 nearby)
Theaters and performance venues
Counts are within about 3.5 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.
Established in 1754.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Mansfield Township Elementary School District, Office of Education Department of Children and Families. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Mansfield Township ElementaryPort Murray | Pre-K–6 | 570 | Public | 2.9 mi |
| Warren Regional SchoolPort Murray | 9–12 | — | Alternative Education | 3.4 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 Hackettstown, Mount Olive, Independence, Oxford, Allamuchy, Liberty, Washington Township (Morris County), Lebanon Township, White, Washington Township (Warren County) and Hope.
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.