Gjøvik is a municipality in Innlandet county, Norway.. The administrative centre of the municipality is the town of Gjøvik. Some of the villages i…Gjøvik is a municipality in Innlandet county, Norway.. The administrative centre of the municipality is the town of Gjøvik. Some of the villages in Gjøvik include Biri, Bybrua, and Hunndalen. The 671-square-kilometre municipality is the 169th largest by area out of the 356 municipalities in Norway. Gjøvik is the 35th most populous municipality in Norway with a population of 30,563. The municipality's population density is 48.6 inhabitants per square kilometre and its population has increased by 3.9% over the previous 10-year period.