Suffolk County, New York

Suffolk County
Montauk Point Light
Montauk Point Light
Flag of Suffolk County
Official seal of Suffolk County
Map of New York highlighting Suffolk County
Location within the U.S. state of New York
Map of the United States highlighting New York
New York's location within the U.S.
Coordinates: 40°56′N 72°41′W / 40.94°N 72.68°W / 40.94; -72.68
Country United States
State New York
Named forSuffolk, England
Largest TownBrookhaven
 • ExecutiveSteve Bellone (D)
 • Total2,373 sq mi (6,150 km2)
 • Land912 sq mi (2,360 km2)
 • Water1,461 sq mi (3,780 km2)  62%
 • Total1,525,920
 • Density1,637.0/sq mi (632.0/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional districts1st, 2nd, 3rd
Population is the official 2020 census count
Interactive map of Suffolk County, New York

Suffolk County (/ˈsʌfək/) is the easternmost county in the U.S. state of New York. It is located on the Eastern end of Long Island. According to the 2020 United States census, the county's population was 1,525,920 [1] making it the fourth-most populous county in New York State, after New York City's Brooklyn, Queens, and Manhattan. Its county seat is Riverhead,[2] though most county offices are in Hauppauge.[3] The county was named after the county of Suffolk in England, from where its earliest European settlers came.

Suffolk County incorporates the easternmost extreme of the New York City metropolitan area. The geographically largest of Long Island's four counties and the second-largest of 62 counties in New York State, Suffolk measures 86 miles (138 km) in length and 26 miles (42 km) in width at its widest (including water).[4] Most of the island is near sea level, with over 1,000 miles of coastline.[5]

Like other parts of Long Island, the high population density and relative closeness to New York City means that the economy has a mix of industry and science satellite to the city alongside more rural activities like agriculture, a fishery and tourism. Major scientific research facilities in Suffolk County include Brookhaven National Laboratory in Upton, Cold Spring Harbor Laboratory in Huntington, and Plum Island Animal Disease Center on Plum Island. The county is also home to several major universities such as Stony Brook University and Farmingdale State College.

  1. ^ "State & County QuickFacts - Suffolk County, New York". United States Census Bureau. Retrieved March 30, 2018.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. ^ "Suffolk County Government". Suffolk County, New York. Retrieved April 22, 2015.
  4. ^ About Suffolk County on the county website Archived May 22, 2008, at the Wayback Machine
  5. ^ Cite error: The named reference :0 was invoked but never defined (see the help page).