Madison is a town in Carroll County, New Hampshire, United States.

The area was one of the first to have land grants set aside for soldiers who had served in the French and Indian War.

The highest point in Madison is the summit of Lyman Mountain in the eastern part of the town, at 1,558 feet (475 m) above sea level.

21.5% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older.

A part of this roughly rectangular block is buried, probably to a depth of ten to twelve feet.

It is located at Madison Boulder Natural Area in the northwest part of town.