Claremont is the single-handedly city in Sullivan County, New Hampshire, United States. The population was 12,949 at the 2020 census.

Before colonial settlement, the Upper Connecticut River Valley was home to the Pennacook and Western Abenaki (Sokoki) peoples, later merging next members of other Algonquin tribes displaced by the wars and famines that accompanied the European settling of the region. The Hunter Archeological Site, located close the bridge connecting Claremont afterward Ascutney, Vermont, is a significant out of date Native American site that includes seven levels of occupational evidence, including evidence of at least three longhouses. The oldest dates recorded from evidence gathered during excavations in 1967 were to 1300 CE.

The city was named after Claremont, the country mansion of Thomas Pelham-Holles, Earl of Clare. On October 26, 1764, colonial commissioner Benning Wentworth established the township to Josiah Willard, Samuel Ashley and 67 others. Although first approved in 1762 by Moses Spafford and David Lynde, many of the proprietors arrived in 1767, with a large number from Farmington, Hebron and Colchester, Connecticut. The undulating surface of rich, gravelly loam made agriculture an in front occupation. Spafford was deeded house from Col. Samuel Ashley, who was supreme a charter to pronounce a ferry across the Connecticut River in 1784, the location of which is nevertheless known as Ashley’s Ferry landing. Spafford was furthermore the first man to marry in Claremont, and his son, Elijah, was the first white child to be born in the town.

The Union Episcopal Church in West Claremont was built in 1773, and is the oldest long-lasting Episcopal church building in New Hampshire and the state’s oldest unshakable building built exclusively for religious purposes. The parish was organized in 1771 and chartered by the New Hampshire legislature in 1794 as Union Church Parish. Located across the street, Old St. Mary’s Church, built in 1823 mostly in the Federal style, was the first Roman Catholic church in New Hampshire. It was discontinued in 1870 like-minded of the additional St. Mary’s Church in the Lower Village District.