Dewey County, South Dakota Genealogy Guide

Dewey County, South Dakota (Map It) was created on March 09, 1883 from Armstrong County and Indian lands. The county was named in honor of William P. Dewey, territorial surveyor-general. Learn More About State of South Dakota History

Dewey County is bordered by Corson County (north), Walworth County (northeast), Potter County (east), Sully County (southeast), Stanley County (south), Ziebach County (west).

Dewey County Cities and Towns include Eagle Butte, Green Grass, Isabel, La Plant, North Eagle Butte, Timber Lake, Whitehorse.

Dewey County, South Dakota Courthouse Records

The Dewey County Courthouse is located in Timber Lake, South Dakota. Learn More About State of South Dakota Court, Tax, Land and Probate Records.

Please contact the each clerk's department to confirm mailing address, hours, fees and other information before visiting or requesting information because contact information sometimes changes.  The Clerk's Office DOES NOT DO RESEARCH.  The documents are available to interested parties, barring confidential issues.  Most staff will assist people in finding the materials, but it is up to the individual to do the research.

The following dates indicates what vital, land, probate, and court records are in Dewey county. The date listed for each category of record is usually the earliest registration filed. The earliest date does not indicate that there are numerous records for that year and does not mean that all such events were actually registered.

  • Dewey County Register of Deeds has Marriage Records from 1910 and Land Records from 1883?. The County Register of Deeds is the primary record-keeping and archival repository for county land records and for the recording & maintaining of records pertaining to that real estate, plats, deeds, mortgages & many miscellaneous documents. This office is the keeper of birth, death & marriage records, military discharge records, fictitious name filings, and various types of liens, including mechanic’s liens, state and federal tax liens.
  • Dewey County Clerk of Court has Probate Records from 1883? and Court Records from 1883?.

Dewey County, South Dakota Census Records

Dewey County, South Dakota Vital Records

Dewey County, South Dakota Resources

Dewey County, South Dakota External Links