Washington Township (Warren County) is a township in Warren County, New Jersey, home to about 6,691 people across 18 square miles. Its ZIP code is 07831, and parts of 07863, 07882 and 08827 are in Washington Township (Warren County) too.
Homes sold for a median of $242 per square foot across 3 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
All in Washington Township (Warren County)
Mostly Oxford; part is in Washington Township (Warren County)
Mostly Washington Borough; part is in Washington Township (Warren County)
Mostly Union Township; part is in Washington Township (Warren County)
Each card is that ZIP code’s whole market, including any part outside Washington Township (Warren County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Washington 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)43 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)25 miles away |
| Nearest city of 250,000+ | Newark, NJ43 miles away |
| Nearest city of 1 million+ | Philadelphia, PA52 miles away |
Straight-line distances from the center of Washington 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.
Washington Township (Warren County) had 6,492 residents in the 2020 census, up 4% since 2000.
It’s the 326th 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 (7 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).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (1 nearby)
Grocery stores (2 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Counts are within about 3 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 1849.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Franklin Township School District, Washington Borough School District, Washington Township School District and others. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Franklin Township SchoolWashington | Pre-K–6 | 251 | Public | 3.6 mi |
| Taylor Street Elementary SchoolWashington | Pre-K–2 | 280 | Public | 0.7 mi |
| Port Colden SchoolWashington | 1–3 | 170 | Public | 2.0 mi |
| Washington Memorial Elementary SchoolWashington | 3–6 | 280 | Public | 0.4 mi |
| Brass Castle SchoolWashington | 4–6 | 261 | Public | 1.0 mi |
| Warren Hills Regional Middle SchoolWashington | 7–8 | 477 | Public | 0.7 mi |
| Warren County Vocational Technical SchoolWashington | 9–12 | 413 | Career and Technical | 2.0 mi |
| Warren Hills Regional High SchoolWashington | 9–12 | 1,050 | Public | 1.5 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Winston Hall AcademyWashington | 5–12 | 65 | Nonsectarian | 1.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Washington Borough, Oxford, Mansfield Township (Warren County), Union Township, Bethlehem, Hampton Borough, Franklin Township (Warren County), White, Harmony, Alexandria, Lebanon Township and Liberty.
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.