Sullivan County, New Hampshire

Sullivan County
Lempster Mountain Wind Power Project overlooking cemetery in East Lempster, NH
Official seal of Sullivan County
Map of New Hampshire highlighting Sullivan County
Location within the U.S. state of New Hampshire
Map of the United States highlighting New Hampshire
New Hampshire's location within the U.S.
Coordinates: 43°20′39″N 72°14′50″W / 43.344208°N 72.24733°W / 43.344208; -72.24733
Country United States
State New Hampshire
Founded1827
Named forJohn Sullivan
SeatNewport
Largest cityClaremont
Area
 • Total552.1 sq mi (1,430 km2)
 • Land537.5 sq mi (1,392 km2)
 • Water14.6 sq mi (38 km2)  2.6%
Population
 (2020)
 • Total43,063
 • Density80.1/sq mi (30.9/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district2nd
Websitewww.sullivancountynh.gov

Sullivan County is a county in the U.S. state of New Hampshire. As of the 2020 census, the population was 43,063,[1] making it the second-least populous county in New Hampshire. Its county seat is Newport.[2]

Sullivan County is included in the Claremont-Lebanon, NH-VT Micropolitan Statistical Area.

  1. ^ "Census - Geography Profile: Sullivan County, New Hampshire". United States Census Bureau. Retrieved November 21, 2021.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.