Censuses have been taken by the Norwegian government and by ecclesiastical officials for population studies and taxation purposes. Census and census-like records are found from the 1500s to 2000. After 1900, a national census was taken every 10 years until 2000. Access to the national census records is restricted for a period of 100 years after the date of enumeration. Generally, you will find more detailed family information in more recent censuses. Some known deficiencies in the 1865 original census material include records from Gol parish in Buskerud county, Holtålen Parish in Sør-Trøndelag county, Bjerke parish in the Nannestad dioceses in Akershus county, and at least 106 special lists in Kristiania (Old name for Oslo). This collection is provided through cooperation with the National Archives of Norway.