1850 Counties of Mississippi
| in area | Courts held at | Pop in 1850 | ||
| Adams Co, MS | southwest part on MS & Homochitto rivers | 600 sq miles | Natchez | 18,069 |
| Amite Co, MS | southwest part | 720 sq miles | Liberty | 9,694 |
| Attala Co, MS | central part, drained by Black & Pearl rivers | 729 sq miles | Kosciusko | 10,999 |
| Bolivar Co, MS | on western boundary, on east side of Mississippi river | 1,700 sq miles | Bolivar | 2,577 |
| Carroll Co, MS | toward the northwest part, east side of Yazoo river | 950 | Carrollton | 18, 945 |
| Chickasaw Co, MS | northern part | 970 | Houston | 16,368 |
| Choctaw Co, MS | central part | 920 | Greensborough | 11,402 |
| Claiborne Co, MS | western boundary, on east side of Mississippi river & Big Black river on northwest | 500 | Fort Gibson | 14,899 |
| Clarke Co, MS | east boundary, water by Chicksaw river | 650 | Quitman | 5,477 |
| Coahoma Co, MS | western boundary, water by Sunflower river | 680 | Coahoma Court House | 2,724 |
| Copiah Co, MS | southwest part, Pearl river on northeast side | 900 | Gallatin | 11,794 |
| Covington Co, MS | southern part | 960 | Williamsburg | 3,358 |