In the 1900 US Census for District 205, Baker, Kingsbury County, South Dakota the family of Fitch Barnum was enumerated as follows:
Dwelling #58; Family #58
Barnum, Fitch R.; Head; White; Male; b. Jan. 1852; 48; Married 13 years; b. Illinois; Father b. New York; Mother b. Pennsylvania; Farmer; Can read, write and speak English; Owns farm home free of mortgage
Barnum, Jessey L.; Wife; White; Female; b. Mar. 1866; 34; Married 13 years; Mother of 4 children; 3 children living; b. Germany; Both parents b. Germany; Immigrated to US in 1871; Living in US 29 years; Can read, write and speak English
Barnum, Fernley R.; Son; White; Male; Feb. 1889; 11; Single; b. South Dakota; Father b. Illinois; Mother b. Germany; At school; Can read, write and speak English
Barnum, Milton J.; Son; White; Male; May 1890; 10; Single; b. South Dakota; Father b. Illinois; Mother b. Germany; At school; Can read, write and speak English
Barnum, Clifton L.; Son; White; Male; Jan. 1892; 8; Single; b. South Dakota; Father b. Illinois; Mother b. Germany; At school; Can read, write and speak English