Allenstown, New Hampshire

Allenstown, New Hampshire
Allenstown Municipal Building
Location in Merrimack County and the state of New Hampshire.
Coordinates: 43°09′28″N 71°24′17″W / 43.15778°N 71.40472°W / 43.15778; -71.40472
CountryUnited States
StateNew Hampshire
CountyMerrimack
Incorporated1831
VillagesAllenstown
Suncook (part)
Government
 • Board of Selectmen
  • Scott McDonald, Chair
  • Patricia Caruso
  • Kathleen Pelissier
  • Diane Adinolfo
  • Laura Lambert
 • Town AdministratorJohn H. Harrington Jr.
Area
 • Total
20.6 sq mi (53.3 km2)
 • Land20.5 sq mi (53.0 km2)
 • Water0.12 sq mi (0.3 km2)  0.55%
Elevation
340 ft (100 m)
Population
 (2020)
 • Total
4,707
 • Density230/sq mi (88.8/km2)
Time zoneUTC-5 (Eastern)
 • Summer (DST)UTC-4 (Eastern)
ZIP code
03275
Area code603
FIPS code33-00660
GNIS feature ID0873528
Websitewww.allenstownnh.gov

Allenstown is a town in Merrimack County, New Hampshire, United States. The population was 4,707 at the 2020 census, up from 4,322 at the 2010 census. Allenstown includes a portion of the village of Suncook. Just over one-half of the town's area is covered by Bear Brook State Park.