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Merrimack County, New Hampshire facts for kids

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Merrimack County
Merrimack County Courthouse, 2019
Merrimack County Courthouse, 2019
Map of New Hampshire highlighting Merrimack 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.
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Country  United States
State  New Hampshire
Founded 1823
Named for Merrimack River
Seat Concord
Largest city Concord
Area
 • Total 955.0 sq mi (2,473 km2)
 • Land 932.9 sq mi (2,416 km2)
 • Water 22.1 sq mi (57 km2)  2.3%
Population
 (2010)
 • Total 146,445
 • Estimate 
(2020)
152,622
 • Density 163.6/sq mi (63.2/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional districts 1st, 2nd

Merrimack County is a county in the U.S. state of New Hampshire. As of the 2010 census, the population was 146,445, making it the third-most populous county in New Hampshire. Its county seat is Concord, the capital of New Hampshire. The county was organized in 1823 from parts of Hillsborough and Rockingham counties, and is named for the Merrimack River. Merrimack County comprises the Concord, NH Micropolitan Statistical Area, which in turn constitutes a portion of the BostonWorcesterProvidence, MARI–NH–CT Combined Statistical Area. In 2010, the center of population of New Hampshire was located in Merrimack County, in the town of Pembroke.

Geography

According to the U.S. Census Bureau, the county has a total area of 956 square miles (2,480 km2), of which 934 square miles (2,420 km2) is land and 22 square miles (57 km2) (2.3%) is water. It is the third-largest county in New Hampshire by land area. The highest point in Merrimack county is Mount Kearsarge, on the border of Warner and Wilmot, at 2,937 feet (895 m).

Adjacent counties

National protected area

Demographics

Historical population
Census Pop.
1830 34,614
1840 36,253 4.7%
1850 40,337 11.3%
1860 41,408 2.7%
1870 42,151 1.8%
1880 46,300 9.8%
1890 49,435 6.8%
1900 52,430 6.1%
1910 53,335 1.7%
1920 51,770 −2.9%
1930 56,152 8.5%
1940 60,710 8.1%
1950 63,022 3.8%
1960 67,785 7.6%
1970 80,925 19.4%
1980 98,302 21.5%
1990 120,005 22.1%
2000 136,225 13.5%
2010 146,445 7.5%
2020 (est.) 152,622 4.2%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2020

2010 census

As of the 2010 United States census, there were 146,445 people, 57,069 households, and 38,104 families living in the county. The population density was 156.8 inhabitants per square mile (60.5/km2). There were 63,541 housing units at an average density of 68.0 per square mile (26.3/km2). The racial makeup of the county was 95.3% white, 1.6% Asian, 1.0% 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 1.6% of the population. In terms of ancestry, 20.5% were English, 20.4% were Irish, 10.1% were German, 9.7% were Italian, 9.7% were French Canadian, 5.2% were Scottish, and 4.9% were American.

Of the 57,069 households, 31.3% had children under the age of 18 living with them, 52.4% were married couples living together, 9.9% had a female householder with no husband present, 33.2% were non-families, and 25.4% of all households were made up of individuals. The average household size was 2.46 and the average family size was 2.94. The median age was 41.4 years.

The median income for a household in the county was $63,012 and the median income for a family was $75,268. Males had a median income of $50,880 versus $37,351 for females. The per capita income for the county was $30,544. About 5.2% of families and 8.1% of the population were below the poverty line, including 10.6% of those under age 18 and 7.4% of those age 65 or over.

Communities

Cities

Towns

Census-designated places

Villages

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