Alton is located in Belknap County, NH. The population is , making Alton the 4th largest city in Belknap County.
There are 4 public schools in Alton with an average Homefacts rating of B-. The total crime rate for Alton is very low , and there are 9 registered sex offenders residing in the city. Unemployment in Alton is low and the median home sales price is $0. Detailed and up-to-date Alton property reports are available for any property address.
Cities near Alton include New Durham, Gilford and Gilmanton.