Stillwater Township

Rural northwest Sussex County — including the villages and communities of Stillwater, Middleville and Swartswood, with lakes, farms, historic mills and extensive outdoor recreation.

Shafer Grist Mill in Stillwater Township
Address note: Many Stillwater Township properties use Newton, Middleville, Swartswood or Stillwater mailing addresses. NJTGO uses the municipal boundary rather than the postal city name when deciding what belongs in the township guide.

Township Essentials

Stillwater Town Hall

964 Stillwater Road
Newton, NJ 07860
973-383-9484

Municipal offices are open Monday–Friday, 8 a.m.–4 p.m.

Stillwater Township School

904 Stillwater Road

The local elementary district serves township children before they continue to Kittatinny Regional High School.

Kittatinny Regional High School

77 Halsey Road
Newton, NJ 07860

Regional secondary school serving Stillwater and neighboring communities.

Historical Society of Stillwater Township

900 Main Street
Stillwater, NJ 07875

Museum, genealogy, archives and preservation programs. Seasonal public visiting hours are offered June–October.

History & Heritage

Shafer Grist Mill

The Casper and Abraham Shafer Grist Mill Complex anchors the historic village beside the Paulinskill River. The complex is listed on the New Jersey and National Registers of Historic Places.

Stillwater Academy

900 Main Street

The 1840s school building now serves as the Historical Society's museum and contains thousands of local artifacts.

Keen's Mill

County Road 521 / Middleville area

A surviving 19th-century grist mill associated with Stillwater's agricultural history.

Historic Villages

Stillwater, Middleville and Swartswood retain the township's rural settlement pattern, historic buildings and strong connection to farming and water-powered industry.

Swartswood State Park

New Jersey's First State Park

1091 County Road 619

The lake was purchased by the state in 1914, and Swartswood was established as New Jersey's first state park in 1915.

519-Acre Swartswood Lake

The natural glacial lake supports swimming in designated guarded areas, fishing, paddling, picnicking and scenic shoreline recreation.

Camping

The park provides seasonal camping and makes Stillwater a genuine overnight outdoor destination.

Trails & Wildlife

Woodlands, wetlands and lake habitat support hiking, birding and wildlife viewing.

Lakes & Rural Recreation

Crandon Lakes

A private lake community extending through portions of Stillwater and neighboring Hampton Township.

Mountain Shadows Lake

A private seasonal community centered on lake recreation and member amenities.

Paulinskill Corridor

The river and nearby rail-trail corridor add fishing, walking, cycling and scenic recreation to the township's outdoor character.

Farm & Forest Landscape

Working farms, wooded roads and low-density residential areas remain central to Stillwater's identity.