South Dakota State Census, 1925 Description Name index and images of census cards from the 1925 South Dakota State Census acquired from the South Dakota State Historical Society. How to Use this Collection » Search Collection View Images in this Collection Browse through 705285 images Citing this Collection "South Dakota State Census, 1925." Database with images. FamilySearch. http://FamilySearch.org : 3 August 2020. Citing Assessor. State Historical Society, Pierre.