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Sullivan County, New Hampshire facts for kids

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Not to be confused with Sullivan, New Hampshire.
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Sullivan County
U.S. county
Lempster Mountain Wind Power Project overlooking cemetery in East Lempster, NH
Lempster Mountain Wind Power Project overlooking cemetery in East Lempster, NH
Official seal of Sullivan County
Seal
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.
Country  United States
State  New Hampshire
Founded 1827
Named for John Sullivan
Seat Newport
Largest city Claremont
Area
 • Total 552.1 sq mi (1,430 km2)
 • Land 537.5 sq mi (1,392 km2)
 • Water 14.6 sq mi (38 km2)  2.6%
Population
 (2020)
 • Total 43,063
 • Density 80.1/sq mi (30.9/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 2nd

Sullivan County is a place called a county in the state of New Hampshire, USA. In 2020, about 43,063 people lived here. This makes it the second-smallest county in New Hampshire by population. The main town, or county seat, where the county government is located, is Newport.

Sullivan County is part of a larger area that includes Claremont and Lebanon in New Hampshire, and parts of Vermont. This area is known as a Micropolitan Statistical Area.

History of Sullivan County

Sullivan County was officially created in 1827. It was formed from the northern part of Cheshire County. The county is named after John Sullivan. He was a hero during the American Revolutionary War. John Sullivan also served as a governor of New Hampshire.

Geography and Natural Features

Sullivan County covers a total area of about 552 square miles. Most of this area, around 537 square miles, is land. The rest, about 15 square miles, is water. This means that about 2.7% of the county is covered by water. Sullivan County is the third-smallest county in New Hampshire by its total area.

Neighboring Counties

Sullivan County shares its borders with several other counties:

Special Protected Areas

One important protected area in the county is the Saint-Gaudens National Historic Site. This site preserves the home and studios of Augustus Saint-Gaudens, a famous American sculptor.


Lakes in Sullivan County

Mountains in Sullivan County

Population and People

Historical population
Census Pop. %±
1830 19,669 —
1840 20,340 3.4%
1850 19,375 −4.7%
1860 19,041 −1.7%
1870 18,058 −5.2%
1880 18,161 0.6%
1890 17,304 −4.7%
1900 18,009 4.1%
1910 19,337 7.4%
1920 20,922 8.2%
1930 24,286 16.1%
1940 25,442 4.8%
1950 26,441 3.9%
1960 28,067 6.1%
1970 30,949 10.3%
1980 36,063 16.5%
1990 38,592 7.0%
2000 40,458 4.8%
2010 43,742 8.1%
2020 43,063 −1.6%
U.S. Decennial Census

The population of Sullivan County has changed over many years. In 2010, there were 43,742 people living here. Most people in the county are white, making up about 97% of the population. Other groups include Asian, Black or African American, and American Indian people. Some people also identify with two or more races. About 1.1% of the population is of Hispanic or Latino origin.

The average age of people in Sullivan County in 2010 was about 43.9 years old.

Cities and Towns

Sullivan County has one city and several towns.

City

Towns

Census-Designated Places

These are areas that are like towns but are defined by the U.S. Census Bureau for statistical purposes:

Other Populated Places

These are smaller communities within the county:

County Services

The Sullivan County Department of Corrections runs the county prison. This prison is located in the town of Unity.

See also

Kids robot.svg In Spanish: Condado de Sullivan (Nuevo Hampshire) para niños

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