1850 Counties of Florida
| in area | Courts held at | Pop in 1850 | ||
| Alachua Co, FL | northern part on eastern margin of Sawannee river, drained by Wakassassee & Withiacochee rivers | 2500 sq miles | Newmansvile | 2,524 |
| Benton Co, FL | on western side, between Withlacooche river & Gulf of Mexico | 120 sq miles | Melendez | 926 |
| Calhoun Co, FL | Southwest boundary, between Apalachicola river & Gulf of Mexico | 1,100 | St Joseph | 1,377 |
| Columbia Co, FL | north boundary, with Suwanne river on west | 4,320 | Lancaster | 4,808 |
| Dade Co, FL | southern boundary, Gulf stream on south & east, including several islands or keys, mostly everglades | 5000 | Key Biscayune | 159 |