Rocky Hill
A tiny historic borough on the Millstone River, known for its preserved village streets, neighborhood parks, local dining landmarks and easy access to Montgomery Township and the Princeton area.
Welcome to Rocky Hill
Rocky Hill is one of Somerset County’s smallest municipalities: about 0.61 square mile with 743 residents in the 2020 Census. Settled in 1701, the borough developed as a village along the road between Princeton and New Brunswick and remains notable for its compact historic streetscape.
Government & Borough Services
Rocky Hill Borough Hall
15 Montgomery Avenue
PO Box 188
Rocky Hill, NJ 08553
609-924-7445
Current borough services include municipal administration and clerk functions, construction, finance, tax collection, zoning, water and sewer, emergency management and fire-safety administration.
Education
Rocky Hill is part of the Montgomery Township School District, which serves students from both Montgomery Township and Rocky Hill.
- Orchard Hill Elementary School — PreK–2
- Village Elementary School — grades 3–4
- Montgomery Lower Middle School — grades 5–6
- Montgomery Upper Middle School — grades 7–8
- Montgomery High School — grades 9–12
Historic Preservation District
Rocky Hill’s Historic Preservation District was added to the National Register of Historic Places in 1982. Much of Washington Street and all of Crescent Avenue, Grove Street, Park Avenue, Reeve Road and Skillman Avenue are within the district, along with portions of Montgomery and Princeton avenues.
Owners of properties in the district should check preservation requirements before making exterior changes visible from a public thoroughfare.
Parks & Recreation
Borough Hall Park
Playground, tennis courts, soccer fields and hiking trails behind Borough Hall.
Panicaro Park
Small neighborhood park with playground equipment, benches and a Memorial Garden.
Point Park
Small civic green at Crescent Avenue and Washington Street, used for the borough’s annual tree lighting.
Van Horne Park
Shared Rocky Hill/Montgomery recreation area with trails, wetlands, playground, fields and basketball courts.
Mary Jacobs Memorial Library
The historic library property at 64 Washington Street is entering a new chapter. In 2026, the borough accepted the property for public purposes, and a newly formed Harold and Mary Jacobs Library Foundation began work toward restoring and revitalizing the site for learning, arts, civic engagement and community connection.
Getting Around
County Route 518 runs through Rocky Hill and connects the borough with Route 206 to the west and Route 27/Kingston to the east. The Delaware & Raritan Canal trail system is nearby, and Princeton-area rail service is available outside the borough.