Northumberland, New Hampshire

Northumberland, New Hampshire
Town
Covered bridge over the Upper Ammonoosuc River
Coordinates: 44°33′48″N 71°33′31″W / 44.56333°N 71.55861°W / 44.56333; -71.55861
CountryUnited States
StateNew Hampshire
CountyCoös
Incorporated1779
VillagesGroveton
Northumberland
Government
  Board of Selectmen
  • James Tierney
  • James Weagle
  • Keith Bronson
Area
  Total
36.78 sq mi (95.25 km2)
  Land35.69 sq mi (92.43 km2)
  Water1.09 sq mi (2.82 km2)  2.96%
Elevation
860 ft (260 m)
Population
 (2020)
  Total
2,126
  Density60/sq mi (23.0/km2)
Time zoneUTC-5 (Eastern)
  Summer (DST)UTC-4 (Eastern)
ZIP code
03582 (Groveton/Northumberland)
03584 (Lancaster)
Area code603
FIPS code33-56100
GNIS feature ID0873688
Websitewww.northumberlandnh.org

Northumberland is a town located in western Coös County, New Hampshire, United States, north of Lancaster. It is part of the Berlin, NHVT micropolitan statistical area. As of the 2020 census, the town population was 2,126, of whom 1,068 lived in the village of Groveton.