The municipality of Torpen was established on 1 January 1914 when the large Nordre Land Municipality was divided into two: Torpen (population: 2,219) and Nordre Land (population: 2,570).
On January 1st, 1914, the municipality of Torpen came into existence when the larger Nordre Land Municipality was split into two parts: Torpen with a population of 2,219 and Nordre Land with a population of 2,570.