| State of Illinois | |
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| Admitted: | Thursday, December 3, 1818 |
| Capital: | Springfield |
| Population: | 12,482,301 (2001) |
| Nickname: | Prairie State |
| State Bird: | Cardinal |
| State Flower: | Purple Violet |
| State Tree: | White Oak |
| Illinois Cities Illinois Counties | |
| Click for additional information about the State of Illinois. | |