| District of Illinois | |
| Vandalia, 1837-1838 | |
| Springfield, 1838-1855 | |
| Chicago, 1848-1855 | |
| District of Eastern Illinois | |
| Cairo, 1905-1911 | |
| Danville, 1905-1911 | |
| East Saint Louis, 1905-1911 | |
| District of Northern Illinois | |
| Chicago, 1855-1911 | |
| Peoria, 1887-1905 | |
| Freeport, 1905-1911 | |
| District of Southern Illinois | |
| Springfield, 1855-1911 | |
| Quincy, 1888-1911 | |
| Danville, 1890-1905 | |
| East Saint Louis, 1904-1905 | |
| Peoria, 1905-1911 | |