Mahnomen County, Minnesota Genealogy Records

Which records survive from Mahnomen County, the years each set covers, and where to find them.

Formed
1906
County seat
Mahnomen
Becker CountyBeltrami CountyClay CountyClearwater CountyHubbard CountyMarshall CountyOtter Tail CountyPennington CountyPolk CountyRed Lake CountyWadena CountyWilkin CountyNorman CountyMahnomen CountyBeckerClayHubbardPenningtonPolkRed LakeWadenaNormanMahnomen
Mahnomen CountyParent county (search here for earlier records)Today's boundaries · U.S. Census Bureau

Records that survive

These are the record series from Mahnomen County held by the Minnesota Historical Society in St. Paul, taken from its finding aids for the county's offices, with the office that kept each and the earliest and latest years. A span can include gaps.

County government

  • Warrant Registers · County Auditor1907–1977
  • Extension Committee meeting minutes · Extension Office1969–2008
  • 4-H Federation meeting minutes and agenda items · Extension Office1981–2008
  • Home Council meeting minutes and agenda items · Extension Office1991–2006
  • AKI meeting minutes · Extension Office2004

Other records

  • Subject files · Extension Office1913–2008

Search the Historical Society's catalog for this county

Source: Minnesota Historical Society, government records finding aids. The Society holds only part of each county's records; most deeds and many court and vital records are still at the county. Minnesota began statewide registration of births in 1900 and of deaths in 1908.

Where to find the records

Offices change their hours and access rules; call before you visit.

Boundaries and parent counties

Formed from: Norman County

Check the parent county for earlier records: Norman County

Otter TailWilkinClayBeckerHubbardRed LakeWadenaClearwaterBeltramiPolkNormanMahnomenMahnomenNormanClayBeckerHubbardRed LakeWadenaPolk
Mahnomen as created in 1906Where its land was the day beforeToday's boundaryBoundaries: Newberry Library, Atlas of Historical County Boundaries

Records stay with the county that created them. If your ancestor lived here before 1906, search the parent county. The Atlas of Historical County Boundaries shows each boundary change.

Research tip

Minnesota took its own census in 1865, 1875, 1885, 1895 and 1905. They are indexed in the Historical Society's People Records Search (not every county appears in every year), and the 1905 census, like the 1895 census for men over 21, says how long each person had lived in the state and in the district, a clue to when a family arrived.