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Sullivan County, New Hampshire facts for kids

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

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

History

Sullivan County was organized at Newport in 1827 and is named for John Sullivan (1740–1795), the Revolutionary War hero and a former governor. It was formed from the northern part of Cheshire County.

Geography

According to the U.S. Census Bureau, the county has a total area of 552 square miles (1,430 km2), of which 537 square miles (1,390 km2) is land and 15 square miles (39 km2) (2.7%) is water. It is the third-smallest county in New Hampshire by area.

Adjacent counties

National protected area

Demographics

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
1790-1960 1900-1990
1990-2000 2010-2018

2010 census

As of the 2010 United States census, there were 43,742 people, 18,126 households, and 12,025 families living in the county. The population density was 81.4 inhabitants per square mile (31.4/km2). There were 22,341 housing units at an average density of 41.6 per square mile (16.1/km2). The racial makeup of the county was 97.0% white, 0.6% Asian, 0.4% black or African American, 0.3% American Indian, 0.3% from other races, and 1.4% from two or more races. Those of Hispanic or Latino origin made up 1.1% of the population. In terms of ancestry, 23.9% were English, 16.3% were Irish, 9.2% were German, 7.1% were Italian, 6.0% were French Canadian, 5.2% were Scottish, 5.1% were Polish, and 4.4% were American.

Of the 18,126 households, 28.5% had children under the age of 18 living with them, 51.3% were married couples living together, 9.9% had a female householder with no husband present, 33.7% were non-families, and 26.1% of all households were made up of individuals. The average household size was 2.37 and the average family size was 2.82. The median age was 43.9 years.

The median income for a household in the county was $50,689 and the median income for a family was $61,959. Males had a median income of $44,408 versus $34,233 for females. The per capita income for the county was $26,322. About 7.5% of families and 10.0% of the population were below the poverty line, including 12.6% of those under age 18 and 7.9% of those age 65 or over.

Communities

City

Towns

Census-designated places

Other populated places

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