Manchester is a city in southern New Hampshire, United States. It is the most populous city in northern New England (the states of Maine, New Hampshire, and Vermont). As of the 2010 census the city had a population of 109,565, and in 2019 the population was estimated to be 112,673.
Manchester is, along with Nashua, one of two seats of New Hampshire's most populous county, Hillsborough County. Manchester lies near the northern end of the Northeast megalopolis and straddles the banks of the Merrimack River. It was first named by the merchant and inventor Samuel Blodgett, namesake of Samuel Blodget Park and Blodget Street in the city's North End. His vision was to create a great industrial center similar to that of the original Manchester in England, which was the world's first industrialized city.
Manchester often appears favorably in lists ranking the affordability and livability of U.S. cities, placing particularly high in small business climate, affordability, upward mobility, and education level.
Native Pennacook Indians called Amoskeag Falls on the Merrimack River—the area that became the heart of Manchester—Namaoskeag, meaning "good fishing place". In 1722, John Goffe III settled beside Cohas Brook, later building a dam and sawmill at what was dubbed "Old Harry's Town". It was granted by Massachusetts in 1727 as "Tyngstown" to veterans of Queen Anne's War who served in 1703 under Captain William Tyng. But at New Hampshire's 1741 separation from Massachusetts, the grant was ruled invalid and substituted with Wilton, Maine, resulting in a 1751 rechartering by Governor Benning Wentworth as "Derryfield"—a name that lives on in Derryfield Park, Derryfield Country Club, and the private Derryfield School.
In 1807, Samuel Blodget opened a canal and lock system to allow vessels passage around the falls, part of a network developing to link the area with Boston. He envisioned a great industrial center arising, "the Manchester of America", in reference to Manchester, England, then at the forefront of the Industrial Revolution.