| Year | Census | Index | Notes |
| 1790 Reconstructed | Book | ||
| 1800 | Film | Book | CD |
| 1810 | Film | Book | CD |
| 1820 | Film | Book | |
| 1830 | Film | Book | |
| 1840 | Film | Book | |
| 1850 | Film | Book | |
| 1860 | Film | Book; Ancestry.com | |
| 1860 Slave | Film | ||
| 1870 | Film | CD | |
| 1870 African-American | CD | ||
| 1880 | CD | ||
| 1900 | ED description Call # Microfilm 407 | ||
| 1920 | Ancestry.com | ||
| 1930 | Ancestry.com |
| Delaware State Census | 1782 reconstructed | Call # folio F163 .H36 1983 |
| The Delaware River Valley | 1671 | Call # F157.D4 C732 1999 |
| Swedes on the Delaware | 1693 | Call # F157.D4 C73 1993 |