This area was first granted in 1728 as Narragansett Number 3, settled by the families of soldiers who had fought at Narragansett, Rhode Island. In 1760, the town was named Amherst in honor of Lord Jeffrey Amherst (1717-1797), commander-in-chief of the colonial forces in the French and Indian War. Amherst was the birthplace of Horace Greeley (1811-1872), founder of the New York Tribune, a founder of the Republican Party, and 1872 Presidential candidate. For a brief time, Amherst was the county seat for Hillsborough County.
Population change for Amherst totaled 9,193 over 56 years, from 2,051 in 1960 to 11,244 in 2016. The largest decennial percent change was a 125 percent increase between 1960 and 1970, this was followed by a 79 percent increase between 1970 and 1980. The 2016 Census estimate for Amherst was 11,244 residents, which ranked 27th among New Hampshire's incorporated cities and towns. The town has 331.4 persons per square mile of land area. (info from NHES website)