Greenwich Township (Warren County) is a township in Warren County, New Jersey, home to about 5,512 people across 11 square miles. Its ZIP code is 08886, and parts of 08804 are in Greenwich Township (Warren County) too.
Homes sold for a median of $272 per square foot in the three months ending August 2026, a seller’s market.
Mostly Greenwich Township (Warren County); also Lopatcong and Franklin Township (Warren County)
Part is in Greenwich Township (Warren County), part in Bloomsbury and Holland
Each card is that ZIP code’s whole market, including any part outside Greenwich Township (Warren County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Greenwich Township (Warren County)’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Greenwich Township (Warren County) well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Newark Liberty International Airport (EWR)49 miles away |
|---|---|
| Closer regional airport | Lehigh Valley International Airport (ABE)18 miles away |
| Nearest city of 250,000+ | Philadelphia, PA47 miles away |
Straight-line distances from the center of Greenwich 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.
Greenwich Township (Warren County) had 5,473 residents in the 2020 census, up 25% since 2000.
It’s the 363rd 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 86°F in summer, and winter lows average 22°F. About 51.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Phillipsburg-Easton Brg, NJ weather station (5 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).
10 doctors and other health care providers list an office in Greenwich Township (Warren County).
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|---|
| Nurse practitioners and physician assistants | 5 |
| Mental health providers | 2 |
| Physical and occupational therapists | 1 |
| Chiropractors | 1 |
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 (3 nearby)
Pharmacies
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 2.5 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 1798.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Greenwich Township School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Greenwich SchoolStewartsville | Pre-K–5 | 397 | Public | 0.9 mi |
| Stewartsville Middle SchoolStewartsville | 6–8 | 210 | Public | 0.2 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.
Buying or selling around Greenwich Township (Warren County)? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
Shares ZIP codes with Lopatcong, Bloomsbury, Holland, Pohatcong, Franklin Township (Warren County), Bethlehem and Alexandria.
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.