ILIllinois
Prairie State · Capital: Springfield · Midwest (Midwest Rust)
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Bordering states: Wisconsin, Iowa, Missouri, Kentucky, Indiana.
4 fun facts about Illinois
- Chicago invented the skyscraper — the Home Insurance Building (1885) was the first.
- Lincoln spent most of his political career in Springfield, IL — but was born in Kentucky.
- The state produces more pumpkins than any other — over 90% of US Halloween jack-o-lanterns originate here.
- Route 66 starts in Chicago and ends in Santa Monica, CA.
Frequently asked questions about Illinois
Is Illinois a US state?
Yes, Illinois is one of the 50 US states. It was admitted to the Union in 1818, making it the 21st state. Its capital is Springfield and its largest city is Chicago.
What is the capital of Illinois?
The capital of Illinois is Springfield. Note that the largest city in Illinois is Chicago, not the capital — a common point of confusion.
When did Illinois become a state?
Illinois became a US state in 1818. It is the 21st state admitted to the Union.
What is the abbreviation for Illinois?
The 2-letter USPS abbreviation for Illinois is IL.
How big is Illinois?
Illinois ranks #25 of 50 US states by area — a mid-sized US state.
What is the population of Illinois?
Illinois has a population of over 10 million.
What region is Illinois in?
Illinois is in the Midwest region of the United States, per the US Census Bureau.
What time zone is Illinois in?
Illinois observes Central Time.
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