Belmont is a town in Belknap County, New Hampshire, United States. The population was 7,356 at the 2010 census.The primary settlement in town, where 1,301 people resided at the 2010 census, is defined by the U.S. Census Bureau as the Belmont census-designated place and includes the densely populated portion of the town near the intersection of New Hampshire Route 106 and New Hampshire Route 140.