Hillsborough County, New Hampshire facts for kids
Quick facts for kids
Hillsborough County
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![]() Manchester skyline
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![]() Location within the U.S. state of New Hampshire
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![]() New Hampshire's location within the U.S. |
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Country | ![]() |
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State | ![]() |
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Founded | 1769 | |
Named for | The Earl of Hillsborough | |
Seat | Manchester and Nashua | |
Largest city | Manchester (by population) Weare (by area) |
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Area | ||
• Total | 892.5 sq mi (2,312 km2) | |
• Land | 876.5 sq mi (2,270 km2) | |
• Water | 15.9 sq mi (41 km2) 1.8% | |
Population
(2020)
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• Total | 422,937 | |
• Density | 473.879/sq mi (182.966/km2) | |
Time zone | UTC−5 (Eastern) | |
• Summer (DST) | UTC−4 (EDT) | |
Congressional districts | 1st, 2nd |
Hillsborough County is the most populous county in the U.S. state of New Hampshire. As of the 2020 census, the population was 422,937, almost one-third the population of the entire state. Its county seats are Manchester and Nashua, the state's two biggest cities. Hillsborough is northern New England's most populous county as well as its most densely populated.
Hillsborough County comprises the Manchester-Nashua, NH Metropolitan Statistical Area, which in turn constitutes a portion of the Boston-Worcester-Providence, MA-RI-NH-CT Combined Statistical Area.
Contents
History
Hillsborough was one of the five original counties identified for New Hampshire in 1769, and was named for Wills Hill, the Earl of Hillsborough who was British Secretary of State for the Colonies at the time. The county was organized at Amherst on March 19, 1771. In 1823 a number of towns were removed to become part of Merrimack County. Over several years ending in 1869, county administrative functions were moved from Amherst first to Milford in 1866 then to the current seats of Manchester and Nashua.
Geography
According to the U.S. Census Bureau, the county has a total area of 892 square miles (2,310 km2), of which 876 square miles (2,270 km2) is land and 16 square miles (41 km2) (1.8%) is water. The highest point in Hillsborough county is Pack Monadnock Mountain at 2,290 feet (700 m).
Adjacent counties
- Merrimack County (north)
- Rockingham County (east)
- Essex County, Massachusetts (southeast)
- Middlesex County, Massachusetts (south)
- Worcester County, Massachusetts (southwest)
- Cheshire County (west)
- Sullivan County (northwest)
National protected area
- Wapack National Wildlife Refuge
Demographics
Historical population | |||
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Census | Pop. | %± | |
1790 | 32,883 | — | |
1800 | 43,899 | 33.5% | |
1810 | 49,249 | 12.2% | |
1820 | 53,884 | 9.4% | |
1830 | 37,724 | −30.0% | |
1840 | 42,494 | 12.6% | |
1850 | 57,478 | 35.3% | |
1860 | 62,140 | 8.1% | |
1870 | 64,238 | 3.4% | |
1880 | 75,634 | 17.7% | |
1890 | 93,247 | 23.3% | |
1900 | 112,640 | 20.8% | |
1910 | 126,072 | 11.9% | |
1920 | 135,512 | 7.5% | |
1930 | 140,165 | 3.4% | |
1940 | 144,888 | 3.4% | |
1950 | 156,987 | 8.4% | |
1960 | 178,161 | 13.5% | |
1970 | 223,941 | 25.7% | |
1980 | 276,608 | 23.5% | |
1990 | 336,073 | 21.5% | |
2000 | 380,841 | 13.3% | |
2010 | 400,721 | 5.2% | |
2020 | 422,937 | 5.5% | |
U.S. Decennial Census 1790–1960 1900–1990 1990–2000 2010–2018 |
Race | Percentage |
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White, not Hispanic or Latino | 83% |
Asian | 6% |
Hispanic or Latino | 8% |
Black or African American | 3% |
As of the 2020 United States census, there were 422,937 people residing in the county. The population density was 482.8 inhabitants per square mile (186.4/km2).
The racial makeup of the county was 81.0% white, 4.8% Asian, 3.9% black or African American, 1.7% American Indian, 2.1% from other races, and 2.0% from two or more races. Those of Hispanic or Latino origin made up 8% of the population.
For the period 2011–2015, 24.8% of the county's population had French ancestry (including 9.9% of the total population with French Canadian ancestry), 20.9% had Irish, 13.1% had English, 10.2% had Italian, and 8.2% had German ancestry. For the same time period, the estimated median annual income for a household in the county was $71,244, and the median income for a family was $85,966. Male full-time workers had a median income of $60,349 versus $44,270 for females. The per capita income for the county was $35,242. About 5.8% of families and 8.8% of the population were below the poverty line, including 11.7% of those under age 18 and 5.9% of those age 65 or over.
Communities
Cities
- Manchester (county seat)
- Nashua (county seat)
Towns
Census-designated places
Villages
![]() | Hypatia |
![]() | Agnodice |
![]() | Aglaonice |
![]() | Mary the Jewess |