Census records of free Black heads of household in the antebellum South
| Name | State | Num In Family | Notes |
|---|---|---|---|
| Simonson, Abraham | New York | — | — |
| Simonton, London | Maine | 2 | — |
| Simpson, John | South Carolina | — | — |
| Simpter, Robert | Pennsylvania | — | — |
| Simson, Ceazar | Massachusetts | — | — |
| Simson, Ceazor | Massachusetts | — | — |
| Sinah (Negro) | Maryland | — | — |
| Sindney (free Negro) | South Carolina | — | — |
| Sipeo (Negro) | Connecticut | 6 | — |
| Sipio (Negro) | Maryland | — | — |
| Sipro (Negro) | Connecticut | 3 | — |
| Sipro (Negro) | Connecticut | 6 | — |
| Sisco, Charles (Negro) | Delaware | 3 | — |
| Sisco, Ebin | Rhode Island | — | — |
| Sisco, George (Negro) | Delaware | 2 | — |
| Sisco, John (Negro) | Delaware | 4 | — |
| Sisco, John Jr. (Negro) | Delaware | 3 | — |
| Siscoe, Mode | Rhode Island | — | — |
| Siscoe, Solomon | New York | — | — |
| Skinner, Maria | Rhode Island | — | — |
| Skipwith, Sir Peyton | Virginia | — | — |
| Skott, William | South Carolina | — | — |
| Slade, Cuff | Massachusetts | — | — |
| Slauter, James | New York | — | — |
| Slocom, Cato (Negro) | Rhode Island | — | — |