Yaphank, New York

The Suffolk County Board of Elections building in Yaphank, New York, features a distinctive red-brick exterior with a sloped green roofline. The facility serves as the central hub for election administration and voter services in Suffolk County. Several vehicles are parked nearby, and leafless trees frame the scene on a clear day.
The Suffolk County Board of Elections building in Yaphank, New York, features a distinctive red-brick exterior with a sloped green roofline. The facility serves as the central hub for election administration and voter services in Suffolk County. File photo: Ray Larsen, licensed.

Yaphank, located in central Suffolk County, is a hamlet within the Town of Brookhaven that blends historic charm, natural beauty, and convenient access to Long Island’s key roadways. Once known as “Millville” for its many water-powered mills along the Carmans River, Yaphank grew into an important community with a rich history dating back to the 18th century. Today, it offers a quiet residential atmosphere alongside parks, preserved lands, and cultural sites.

History and Community

Yaphank’s roots stretch back to colonial times, with the Carmans River serving as the lifeblood of the community. By the 19th century, Yaphank was home to several mills, farms, and eventually Camp Upton, a U.S. Army training facility during World War I and World War II. After the wars, the camp was redeveloped into what is now Brookhaven National Laboratory, one of the nation’s leading research facilities. The hamlet still honors its past with museums and preserved historic homes.

The community is largely residential today, with quiet neighborhoods, local schools served by the Longwood Central School District, and easy access to shopping and services in nearby Shirley, Medford, and Patchogue.

Attractions and Recreation

Yaphank is home to several attractions that make it unique on Long Island:

  • Southaven County Park – A large park along the Carmans River featuring camping, hiking, picnicking, and freshwater fishing.
  • Suffolk County Farm and Education Center – A working farm operated by Cornell Cooperative Extension, offering family-friendly events, petting zoos, and agricultural programs.
  • Yaphank Historical Society – Preserves local landmarks, including historic homes and the sweeping story of Yaphank’s role in Long Island history.
  • Brookhaven National Laboratory – While not a tourist site in the traditional sense, BNL occasionally hosts open houses and outreach events that highlight cutting-edge scientific research.

Government and Civic Presence

Yaphank is home to several important Suffolk County government facilities, including the Suffolk County Police Headquarters, the Suffolk County Jail, and the Board of Elections. These institutions make the hamlet a central location for government and administrative functions within Suffolk County.

Location and Transportation

Yaphank sits along the Long Island Expressway (Exit 67) and Sunrise Highway, making it an accessible hub for commuters. It is also served by the Yaphank LIRR station on the Main Line, though service is limited compared to larger neighboring stations.

Its central Suffolk location places it within driving distance of both the Hamptons and western Long Island, making it an attractive residential choice for those who want suburban living with access to beaches, parks, and job centers.


Visitor’s Snapshot: Yaphank, NY

CategoryDetails
TownBrookhaven
CountySuffolk
School DistrictLongwood Central School District
Notable ParksSouthaven County Park, Carmans River
Key AttractionsSuffolk County Farm, Yaphank Historical Society
TransportationLong Island Expressway (Exit 67), Sunrise Highway, Yaphank LIRR Station
NearbyBrookhaven National Laboratory, Patchogue, Shirley

Yaphank, NY, offers a mix of history, science, and nature that sets it apart on Long Island. With its preserved farmland, county parks, and cultural institutions, the hamlet maintains its small-town charm while still benefiting from its central location. Whether you’re visiting for the day or considering moving to the area, Yaphank provides a unique glimpse into both Long Island’s past and its future.