| Year | Census | Index |
| 1790 | Film | CD, Book |
| 1800 | Film | CD, Book |
| 1810 | Film | CD, Book |
| 1820 | Film | Book |
| 1830 | Film | Book |
| 1840 | Film | Book |
| 1850 | Film | Book |
| 1860 | Film | |
| 1870 | Film | CD |
| 1870 African-American | CD | |
| 1880 | Film* | CD, Book; Partial film; see below |
| 1890 Veterans | Film | Book |
| 1920 | Ancestry.com | |
| 1930 | Ancestry.com |
* 1880 film includes Aroostook (part), Cumberland, Franklin, Kennebec, Knox (part), Lincoln, Oxford, Penobscot (part), Somerset (part), Sagadahoc, Waldo, Washington (part)
| Acadie, Penobscot Bay & River | 1810 | Microfiche 3032 |
| Frankfort | 1800, 1810, 1820, 1830, 1840 | F29.F72 V57 |
| Orrington, Penobscot | 1790-1900 | folio F29.O77 S94 v.2 |