Sully County, South Dakota Genealogy

United States South Dakota  Sully County

Guide to Sully County, South Dakota ancestry, family history and genealogy birth records, marriage records, death records, census records, family history, and military records.

County Courthouse
Sully County Courthouse 700 Ash Avenue Onida, SD 57564 Phone: 605.258.2535 Register of Deeds has birth, marriage, death, burial and land records; Clerk Courts has probate and court records

Parent County

 * 1873--Sully County was created 8 January 1873 from Buffalo County. County seat: Onida

Neighboring Counties

 * Dewey
 * Hughes
 * Hyde
 * Potter
 * Stanley

Census
1905, 1915, 1925 State Censuses --Unique information could include: Ethnic Background, Maiden Name, Church Affiliation &amp; Military Service

1905 state census with images can be viewed free at FamilySearch Record Search

1915 state census with images can be viewed free at FamilySearch Record Search

1925 state census with images can be viewed free at FamilySearch Record Search

1935 state census with images can be viewed free at FamilySearch Record Search

1945 state census with images can be viewed free at FamilySearch Record Search

Probate Records
Online Records
 * 1800 – 1985 North Dakota and South Dakota Wills and Probate Records 1800-1985 at Ancestry.com — index and images $

Web Sites

 * USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.