Merrimack is a town in Hillsborough County, New Hampshire, United States. The population was 26,632 as of the 2020 census. There are four villages in the town: Merrimack Village, Thorntons Ferry, Reeds Ferry, and South Merrimack.
Elevation: 180 ft (50 m)
Country: United States
State: New Hampshire
County: Hillsborough
Settled: 1673
Incorporated: April 2, 1746
Villages: Merrimack · Reeds Ferry · South Merrimack · Thorntons Ferry