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On December 3, 1818, Illinois became the 21st state of the United States of America. Before statehood, it was called the Illinois Territory. It had been formed from the same Northwest Territory from which the Ohio and the Indiana Territories had been formed and admitted to respective statehood on March 1, 1803.

Illinois was admitted into the Union on December 3, 1818 becoming the 21st state to join the union.

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Illinois was admitted into the Union on December 3, 1818 becoming the 21st state to join the union.

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Q: When did Illinois become a US state?
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Related questions

Did Illinois become a state while Benjamin Franklin was president of the US?

Benjamin Franklin was not a president.


Chicago belongs to which country?

It is a city within the US State of Illinois.


When did illinos become a state?

Illinois was admitted into the Union on December 3, 1818 becoming the 21st state to join the union.


Which state has greatest number of people US Illinois state or Antarctica?

Since Antarctica is not a state, not a country, and Illinois is a state, your answer must be Illinois.


What is Illinois state rank in admission to the union?

Illinois is the 21st US State.


How many US senators are from Illinois?

Every US state, including Illinois, has two US senators.


What was the 21st state to join the union?

Illinois became the 21st US state in 1818.


How many rep does the state of Illinois have?

Illinois has 18 US Representatives.


What year did illonois become a state?

Illinois became a state in 1818. It was the 21st state


How many Senators are chosen in Illinois?

There are 59 State Senators in the Illinois Senate and two US Senators from Illinois in the US Senate.


What US state is ranked 25th in size?

Illinois is the 25th largest state in the US.


When did Flossmoor Illinois become part of the US?

The same year as the rest of Illinois, in 1818.