Place:Hillsborough, New Hampshire, United States

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source: Family History Library Catalog

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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.

History

the text in this section is copied from an article in Wikipedia

Hillsborough was one of the five original counties identified for New Hampshire in 1769, and was named for Wills Hill, 1st Earl of Hillsborough, who was British Secretary of State for the Colonies at the time. The county was formally organized at Amherst on March 19, 1771.

In 1823, twelve townships of Hillsborough Country – Andover, Boscawen, Bradford, Dunbarton, Fishersfield (now Newbury), Henniker, Hooksett, Hopkinton, New London, Salisbury, Sutton, and Warner – became part of Merrimack County. The town of Merrimack along the Merrimack River in south-central Hillsborough County was not included in the newly formed county to the north. Hillsborough County's administrative functions were moved from Amherst to Milford in 1866, and then to the current seats of Manchester and Nashua in 1869.

Timeline

Population History

source: Source:Population of States and Counties of the United States: 1790-1990

Research Tips

External links

www.hillsboroughcountynh.org/