United States Census (Microfilm)
Location: These microfilm rolls are housed in the cabinet on the east wall of the Indiana Room next to the copy machine
Holdings:
- 1830 - 15 counties, including local counties Decatur & Rush
- 1840 - Decatur, DeKalb, Delaware, Dubois
- 1850 - Decatur, Bartholomew, Benton, Blackford, Boone, DeKalb, Franklin, Fulton, Jennings, Johnson, Ripley, Rush, Shelby, Spencer, Starke
- 1860 - Decatur, Bartholomew, Benton, Franklin, Jennings, Johnson, Ripley, Rush, Scott, Shelby
- 1870 - Decatur, Bartholomew, Benton, Franklin, Jennings, Ripley, Rush, Scott, Shelby
- 1880 - Decatur, Allen (partial), Bartholomew, Benton, Blackford, Boone (partial), Dearborn (partial), DeKalb, Fountain (partial), Franklin, Fulton (partial), Jefferson (partial), Jennings, Johnson (partial), Randolph (partial), Ripley, Rush, St. Joseph, Scott, Shelby, Starke
- 1900 - Decatur, Allen (partial), Bartholomew, Dearborn (partial), DeKalb (partial), Franklin, Fulton, Gibson, Jackson (partial), Jasper, Jennings, Ripley, Rush
- 1910 - Decatur, Bartholomew, Benton, Blackford, Brown, Dearborn, DeKalb, Franklin, Jefferson, Jennings, Randolph, Ripley, Rush, St. Joseph, Scott, Shelby, Starke
- 1920 - Decatur, Floyd (partial), Fountain (partial)
- 1930 - Decatur, Clark (partial)
United States Census Indexes (Book Form)
Location: The following are all on the north wall of the Indiana Room under the call number IND 929.3, Section D.
Holdings:
- 1807- Indiana Territory
- 1820- Indiana
- 1830- Indiana, Decatur County
- 1840- Indiana, Decatur County
- 1850- Indiana, Decatur County
- 1860- Indiana, Decatur County, Marion County
- 1870- Indiana, Decatur County, Bartholomew County, Franklin County (individuals 18 and over), Ripley County (individuals 18 and over)
- 1880- Decatur County
- 1900- Decatur County
- 1910- Decatur County