Suffolk County
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AI overview
Suffolk County is a county located on Long Island in New York State, encompassing both suburban and rural areas east of New York City. It is the largest county by area in New York State and serves as home to over 1.4 million people, making it an important economic and residential hub for the region.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Country
- United States
- State
- New York
- Named after
- Suffolk , England
- Seat
- Riverhead
- Largest town
- Brookhaven
- Executive
- Edward P. Romaine ( R )
- Total
- 2,373 sq mi (6,150 km )
- Land
- 912 sq mi (2,360 km )
- Water
- 1,461 sq mi (3,780 km ) 62%
- Estimate 2025
- 1,546,090
- Density
- 1,670/sq mi (646/km )
- Per capita
- US$90,074 (2024)
- Time zone
Article
Suffolk County (/ˈsʌfək/ SUF-ək) is the easternmost county in the U.S. state of New York, constituting the eastern two-thirds of Long Island. Suffolk is bordered to its west by Nassau County, to its east by Gardiners Bay and the open Atlantic Ocean, to its north by Long Island Sound, and to its south by the Atlantic Ocean.
As of the 2020 United States census, Suffolk County's population was 1,525,920, its highest decennial count ever, making Suffolk the fourth-most populous county in the State of New York, and the most populous outside of the boroughs of New York City. Its county seat is Riverhead, though most county offices are in Hauppauge. The county was named after the county of Suffolk in England, the origin of its earliest European settlers.