Indiana became the 19th State in 1816 and Illinois became the 21st State in 1818.
Illinois became a state in 1818.
Illinois
Illinois became the 21st state on December 3, 1818.
It was the year the Illinois State Seal was designed. Illinois became a state in 1818.
Mississippi was the 20th state. Illinois was the 21st. Alabama was the 22nd.
Illinois became the 21st US state in 1818.
Illinois became the 21st state on December 3, 1818.
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Illinois became the 21st state of the United States of America in 1818.
There was no State of Illinois in 1790. Illinois became the 21st state in 1818. See related links for more info.
Illinois became a state in 1818.