In addition to the cemeteries listed here, there are several family cemeteries and single burial sites in Osceola County. Some have grave markers, some do not.

Burdell Township - Burdell Township, Tustin (Augustana Lutheran Church)
Sherman Township - Sherman Township, St. Paul's Lutheran
Highland Township - Highland Township, Hillside (Hillsdale)
Marion Township - Park Lake, Greenwood, Watson Road (Storey), Lux
Leroy Township - Leroy Township
Rose Lake Township - Rose Lake Township, Maple Hill
Hartwick Township - Maple Valley, Cherry Valley, Unknown
Middle Branch - Middle Branch Township, Methodist Episcopal Church, Unknown
Lincoln Township - Wilson (Lincoln Township), Ashton (Old), Ashton (New), Trinity Lutheran (Meida
Cedar Township - Bethel
Osceola Township - Forest Hill (City of Evart) German (North Evart Evangelical United Brethern) - this is now an Osceola Twp Cemetery
Sylvan Township - Sylan Township, Osceola County Poor Farm
Richmond Township - Woodland (City of Reed City), Mt. Olivet, Mennonite, Bitner (Bittner), St. Paul's Evangelical Lutheran Church, Hersey Township (Hersey Village)-this cemetery is located at the border of Hersey Twp. Some Osceola County Cemeteries from the Hersey area are online.
Hersey Township - Oakdale
Evart Township - South Evart (Stryker or Bennet), Holy Cross (Sacred Heart)
Orient Township - Orient