Warren County · Northwest New Jersey

Greenwich Township

Stewartsville & Upper Stewartsville

Greenwich Township combines one of Warren County's oldest settlement areas with a modern residential community, the historic village of Stewartsville, Morris Canal engineering, Route 57 and Route 173 connections, parks, recreation and convenient access to Interstate 78 and the Phillipsburg–Easton region.

Stewartsville Upper Stewartsville Morris Canal Kennedy House & Mill Port Warren Park Route 57 Warren County
Kennedy House and Mill in Greenwich Township, New Jersey
Kennedy House & Mill · Greenwich Township
NJTGO coverage: Greenwich Township, Stewartsville and Upper Stewartsville share this Greenwich Township page set. Stewartsville is the township's historic village and postal center, while Upper Stewartsville is also recognized by the U.S. Census Bureau as a census-designated place within the township.
2026 Community Day — Saturday, October 3, 1:00–5:00 p.m.
Greenwich Township's current municipal calendar lists Community Day for October 3, 2026. Check the Township calendar before attending for any schedule or location updates.
5,473 2020 U.S. Census population
5,726 2025 population estimate
1738 Greenwich appears in early township records
1798 Incorporated under New Jersey township law
08886 Stewartsville ZIP Code

Explore Greenwich Township

Greenwich has enough community, commercial and visitor activity to support a full NJTGO page set.

About Greenwich Township

Greenwich is one of the oldest township communities in what is now Warren County. The area was settled in the late 17th century, appears in official records by 1738 and was formally incorporated as a New Jersey township on February 21, 1798. Over time, portions of the once-vast township became several other Warren County municipalities.

Historic roots, modern location: Greenwich retains farms, historic roads, churches, canal remnants and old village structures while also serving as a residential community with convenient access to Routes 22, 57 and 173, Interstate 78, Phillipsburg, Easton and the Lehigh Valley.

Stewartsville is the best-known community within Greenwich Township and developed as an important crossroads of road, canal and rail transportation. Upper Stewartsville and newer residential areas extend the community beyond the historic village core.

History & Historic Places

Stewartsville Village Historic District Historic village center

Stewartsville became a rural trade and transportation center where the Morris Canal, an early turnpike and the Central Railroad of New Jersey corridor came together.

Kennedy House & Mill 306 NJ Route 173 · Stewartsville

The Kennedy House and Mill is listed on the National Register of Historic Places and reflects Greenwich Township's early milling, agricultural and political history.

Greenwich Historical Society 1709 Washington Valley Drive · Stewartsville

The organization works to preserve and interpret the township's social, cultural, architectural and natural history.

Old Greenwich Cemetery & Church Area Greenwich Church Road

The historic church and cemetery area is deeply connected to the township's colonial and Revolutionary-era story.

Revolutionary-era connections: Greenwich history includes General William “Scotch Willie” Maxwell and Lt. Thomas Stewart, for whom Stewartsville was named. Township history records Stewart's service at Valley Forge and his connection to George Washington.

Morris Canal & Transportation Heritage

Stewartsville was a transportation crossroads. The Morris Canal ran directly through the community, and Greenwich today contains some of the most important preserved canal resources in Warren County.
Port Warren Park 477 Uniontown Road · Stewartsville

County parkland along the Morris Canal Greenway with trails, interpretation and access to the Inclined Plane 9 West historic site.

Inclined Plane 9 West Morris Canal engineering landmark

Warren County's current historic-site planning describes Plane 9 West as one of the canal's most exceptional inclined planes, with a rise of about 100 feet and an overall length approaching 1,600 feet.

Morris Canal Greenway Stewartsville trail connections

Greenway segments preserve portions of the canal corridor and connect Greenwich with neighboring Lopatcong and Franklin Township canal sites.

Jim & Mary Lee Canal Museum Site 477 Uniontown Road

The museum at Plane 9 West is currently listed by Warren County as temporarily closed, while the surrounding historic site and park remain important canal destinations.

Route 57 & the Concrete Mile Early highway history

Greenwich shares in the Route 57 transportation story associated with Thomas Edison's Portland cement and one of New Jersey's earliest concrete highway sections.

Route 173 / Old New Brunswick Pike Historic road corridor

The road through Greenwich is part of a much older regional transportation route that linked early Warren County settlements.

Parks & Recreation

Thomas Stewart Park Thomas Stewart Way · Stewartsville

Community park used for recreation and township events near the municipal complex.

Reinhart Park 321 Greenwich Street · Stewartsville

Municipal park behind the township building and part of Greenwich's local recreation network.

Port Warren Park 477 Uniontown Road · Stewartsville

County park with a 0.8-mile nature loop and a Morris Canal Greenway segment shown on the current Warren County trail map.

Greenwich Township Recreation Youth and community athletics

Current recreation programs include baseball, basketball, cheerleading, field hockey, lacrosse, soccer, softball, running and other activities.

Equestrian Tradition Farms and riding facilities

The township's agricultural landscape has long supported horse farms, riding and equestrian activities.

Pohatcong & Lopatcong Creek Landscape Streams, farms and open-space corridors

Local waterways and preserved land contribute to the township's rural edges and environmental character.

Education

Greenwich Elementary School Greenwich Township School District
Grades PK–5

Part of the local public district serving township children.

Stewartsville Middle School Greenwich Township School District
Grades 6–8

The district serves students through eighth grade from its Stewartsville campus system.

Phillipsburg High School 1 Stateliner Boulevard · Phillipsburg
908-454-3400

Greenwich Township students attend Phillipsburg High School for grades 9–12.

Warren County Community College 475 Route 57 West · Washington

Nearby two-year college offering degree, certificate, workforce and continuing-education programs.

Township Government & Public Services

Greenwich Township Municipal Building 321 Greenwich Street
Stewartsville, NJ 08886
908-859-0909
Mayor Bob Barsony
2026 Township Committee
Deputy Mayor Paul Beam
2026 Township Committee
Township Committee Bill Kanyuck
Brian Baylor
Lillian McDermott
Clerk / Administrator / Registrar Lisa Burd
908-859-0909 · Prompt 0
Police Chief Richard Hummer
Emergency: 911
Non-emergency: 908-454-1010
Stewartsville Volunteer Fire Co. #1 321A Greenwich Street
Emergency: 911
Non-emergency: 908-454-8654
Greenwich Township EMS Emergency: 911
Non-emergency: 908-859-2113

Community Life & Places of Worship

Greenwich is more than a commuter community. Recreation leagues, volunteer emergency services, churches, historic preservation groups, local parks and annual township events continue to give Stewartsville a strong community identity.
Old Greenwich Presbyterian Church 17 Greenwich Church Road · Stewartsville
908-479-4449

Active historic congregation with Sunday worship and community programming.

First Lutheran Church 545 N. Main Street · Stewartsville
908-859-0020
Stewartsville Presbyterian Church 550 N. Main Street · Stewartsville
908-859-1399
Christian Assembly Ministry 805 Route 57 · Stewartsville
908-859-0409
Greenwich Cemetery 15 Greenwich Church Road · Stewartsville
908-479-0144

Historic cemetery associated with the township's long settlement history.

American Legion Post 456 323 Greenwich Street · Stewartsville

Local veterans and community organization.

Location & Getting Around

Interstate 78 Major regional access

Greenwich's location near I-78 provides a direct connection toward Phillipsburg, Easton, the Lehigh Valley and central New Jersey.

Route 57 East-west commercial corridor

Links Greenwich with Franklin Township, Washington and Route 22-area services.

Route 173 Historic and regional road

Passes Kennedy House & Mill and connects Greenwich with Bloomsbury and the I-78 corridor.

County Route 519 Uniontown Road corridor

Connects Port Warren Park and the Morris Canal area with Lopatcong and surrounding communities.

Nearby Communities

Own or Operate a Business in Greenwich Township?

Promote your business to people exploring Greenwich Township, Stewartsville and Upper Stewartsville on NJTGO.com. Enhanced paid listings can include greater visibility, promotional information and an external website link.

Advertising & Enhanced Listings Contact NJTGO