1850 Counties of Kentucky
| in area | Courts held at | Pop in 1850 | ||
| Adair Co, KY | southern part | 800 sq miles | Columbia | 9,898 |
| Allen Co, KY | southern part, water by Big Barren branch of Green river | 400 sq miles | Scottsville | 8,999 |
| Anderson Co, KY | central part, on west side of Kentucky river, drained by Salt river | 170 sq miles | Lawrenceburgh | 6,260 |
| Ballard Co, KY | in western most part, on south side of Ohio river, crossed by Mayfield creek | 375 sq miles | Columbus | 5,496 |
| Barren Co, KY | in southernly part | 900 sq miles | Glasgow | 20,940 |
| Boone Co, KY | extreme north, south side of Ohio river | 300 sq miles | Burlington | 11,125 |
| Bourbon Co, KY | northern part, between KY & Licking rivers | 176 sq miles | Paris | 14,406 |
| Boyle Co, KY | central part, on SW side of Dick's river | 175 sq miles | Danville | 9,116 |
| Bracken Co, KY | north boundary of PA, crossed by Susquehanna river | 1,330 sq miles | Towanda | 42,829 |
| Breathitt Co, KY | east part, crossed by norht fork of KY river | 700 sq miles | Breathitt | 3.785 |
| Breckenridge Co, KY | northern boundary, on south side of Ohio river | 760 sq miles | Hardensburgh | 10.593 |
| Bullitt Co, KY | northern part, on northeastern side of Salt river | 300 sq miles | Shepnerdsville | 6,774 |
| Butler Co, KY | southwest part, crossed by Green river | 570 sq miles | Morgantown | 5,754 |
| Caldwell Co, KY | southwest part, on east side of Tennessee river & crossed by Cumberland river | 600 | Princeton | 13,048 |
| Callaway Co, KY | southern boundary, on west side of Tennessee river | 600 | Wadesborough | 8,096 |
| Campbell Co, KY | north boundary, on southern side of Ohio river | 260 | Newport | 13,127 |
| Carroll Co, KY | north boundary, south side of Ohio river | 140 | Carrollton | 5,526 |
| Carter Co, KY | northeast boundary, west side of Big Sandy river | 800 | Grayson | 6,241 |
| Casey Co, KY | central part | 448 | Liberty | 6,556 |
| Christian Co, KY | southern boundary | 621 | Hopkinsville | 9,580 |
| Clarke Co, KY | northeast part, north side of Kentucky river | 300 | Winchester | 12,683 |
| Clay Co, KY | southeast part | 880 | Manchester | 5,421 |
| Clinton Co, KY | southern boundary | 200 | Albany | 4,889 |