Suffolk County, New York is a county of New York State. It was named for Suffolk, a county in England, from which its earliest settlers came. Its county seat is Riverhead. Suffolk and Nassau counties are generally referred to as "Long Island" (as distinct from New York City) by area residents.
Suffolk County was an original county of New York State, one of twelve created in 1683. Its boundaries were substantially the same as at present, with only minor changes in the boundary with its western neighbor, which was originally Queens County but since 1899 has been Nassau County.
Suffolk County occupies the easternmost portion of Long Island, in the southeastern portion of New York State. It is divided into 10 towns:
- Babylon, containing 3 villages:
- Amityville
- Babylon (Note that the Village of Babylon is contained within the Town of Babylon.)
- Lindenhurst
- Brookhaven, containing 8 villages:
- Belle Terre
- Bellport
- Lake Grove
- Old Field
- Patchogue
- Poquott
- Port Jefferson
- Shoreham
- East Hampton, containing 2 villages:
- East Hampton (Note that the Village of East Hampton is contained within the Town of East Hampton.)
- Sag Harbor (This village is shared with the Town of Southampton.)
- Huntington, containing 4 villages:
- Asharoken
- Huntington Bay
- Lloyd Harbor
- Northport
- Islip, containing 4 villages:
- Brightwaters
- Islandia
- Ocean Beach
- Saltaire
- Riverhead, containing no smaller units
- Shelter Island, containing 1 village:
- Dering Harbor
- Smithtown, containing 3 villages:
- Head of the Harbor
- Nissequogue
- Village of The Branch
- Southampton, containing
- 6 villages:
- North Haven
- Quogue
- Southampton (Note that the Village of Southampton is contained within the Town of Southampton, and is distinct from the Hamlet of Southampton.)
- Westhampton Beach
- Westhampton Dunes
- Sag Harbor (This village is shared with the Town of East Hampton.)
- 17 hamlets:
- Bridgehampton
- Eastport (This hamlet is only partly within the Town of Southampton.)
- East Quogue
- Hampton Bays
- Northampton
- North Sea
- Noyac
- Quiogue
- Remsenburg
- Riverside
- Sagaponack
- Shinnecock Hills
- Southampton (Note that the Hamlet of Southampton is contained within the Town of Southampton, and is distinct from the Village of Southampton.)
- Speonk
- Tuckahoe
- Water Mill
- Westhampton
- 6 villages:
- Southold, containing 1 village:
- Greenport
The population of Suffolk County in the 2000 United States census was 1,419,369.
The county legislature has 18 members.