The South Dakota Department of Health has a Birth Record Search Site for South Dakota birth records with birth dates over 100 years.
“South Dakota’s Vital Records System was started in July of 1905. Individuals who were born before its inception were given the opportunity to file their records after 1905. Although many records from the 1800s and early 1900s have been filed throughout the years, the records before 1905 are not complete. This site contains all of the birth records the Department of Health has on file with dates of birth over 100 years of age. If you do not locate the record on the site, we are sorry, a record has never been filed with our office.”