Grantham, New Hampshire

Grantham, New Hampshire
United Methodist Church in center of Grantham along Route 10, May 2010
Location in Sullivan County and the state of New Hampshire
Coordinates: 43°29′21″N 72°08′15″W / 43.48917°N 72.13750°W / 43.48917; -72.13750
CountryUnited States
StateNew Hampshire
CountySullivan
Incorporated1761
Villages
  • Grantham
  • East Grantham
  • Eastman
  • North Grantham
Government
 • Board of Selectmen
  • Peter H. Garland, Chair
  • Warren Kimball
  • Jeremy Walla
Area
 • Total
28.05 sq mi (72.65 km2)
 • Land27.22 sq mi (70.49 km2)
 • Water0.83 sq mi (2.16 km2)  2.97%
Elevation
948 ft (289 m)
Population
 (2020)
 • Total
3,404
 • Density152/sq mi (58.6/km2)
Time zoneUTC-5 (Eastern)
 • Summer (DST)UTC-4 (Eastern)
ZIP code
03753
Area code603
FIPS code33-31220
GNIS feature ID0873610
Websitegranthamnh.gov

Grantham is a town in Sullivan County, New Hampshire, United States. The population was 3,404 at the 2020 census, an increase over the figure of 2,985 tabulated in 2010. The planned community of Eastman is in the eastern part of the town.