==General information== Grong was established as a municipality on 1 January 1838 (see formannskapsdistrikt). On 1 January 1901, the northwestern district of Høylandet (population: 1,046) was separated from Grong to form its own municipality. On 1 January 1923, the northeastern district of Røyrvik (population: 392), the northwestern district of ...
Anvil.