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Hillsborough County NHGenWeb is a free genealogical site about the history of the county. We hope you find helpful clues for your research of Hillsborough County ancestors.

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COUNTY FORMATION

In 1771, when New Hampshire was divided into five counties. Hillsborough County was formed as one of the original counties. It was named in honor of Wills Hill. Amherst was the county seat.

By 1823, there were 42 townships within Hillsborough County. [See 1823 Statistics and Profile.] The northern townships of Andover, Boscawen, Bradford, Dunbarton, Fishersfield, Henniker, Hooksett, Hopkinton, New London, Salisbury, Sutton, and Warner were set off to became part of the newly formed Merrimack County.

The county seat was moved from Amherst to Milford in 1866. In 1869, the county seat was moved to Nashua & Manchester.