Illinois came later than Ohio: 1818 vs 1803. They are 15 years apart.
| Item | Value | Position in ranked list |
|---|---|---|
| Ohio | 1803 | 2 of 11 |
| Illinois | 1818 | 3 of 11 |
Values are approximate and rounded. This comparison comes from the list "US states by the year they joined the Union, earliest first" (11 items, position 1 is first in that order).
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