There are four villages in the town: Merrimack Village (formerly known as Souhegan Village), Thorntons Ferry, Reeds Ferry, and South Merrimack.

noun. a warship (originally the Union steamer Merrimack) that the Confederates converted into an ironclad, renamed the Virginia, and used against the Monitor in 1862 in the first battle between ironclads.

DescriptionMerrimack is a town in Hillsborough County, New Hampshire, United States. The population was 25,494 at the 2010 census, and an estimated 25,660 in 2017, making it the ninth-largest municipality in New Hampshire.

There are four villages in the town: Merrimack Village, Thorntons Ferry, Reeds Ferry, and South Merrimack. Wikipedia