Nelson is a town in Cheshire County, New Hampshire, United States. The population was 629 at the 2020 census, down from 729 at the 2010 census. Nelson includes the village of Munsonville. Originally named "Monadnock No. 6", the town was granted in 1752 by Governor Benning Wentworth. It was first settled in 1767 by Breed Batchelder. On Febr…Nelson is a town in Cheshire County, New Hampshire, United States. The population was 629 at the 2020 census, down from 729 at the 2010 census. Nelson includes the village of Munsonville. Originally named "Monadnock No. 6", the town was granted in 1752 by Governor Benning Wentworth. It was first settled in 1767 by Breed Batchelder. On February 22, 1774, the town was incorporated by Governor John Wentworth as "Packersfield", after a major proprietor, Thomas Packer, the sheriff at Portsmouth, New Hampshire. The name was changed in 1814 to Nelson in honor of Viscount Horatio Nelson, British admiral and naval hero.