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Admission to Statehood: December 3, 1818 (21st State)
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Area:
- Area: 57,918 sq.mi (150,007 sq.km.), 25th
- Land: 55,593 sq.mi. (143,985 sq.km.), 24th
- Water: 2,325 sq.mi. (6,022 sq.km.), 20th
- Great Lakes: 2,546 sq.mi. (6,594 sq.km.),tied for 5th
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Constitution: Illinois's Constitution , 21st State
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Population (2019): 12,882,135; Rank: 5 of 50 | Population Quick Facts
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Bird: Cardinal | List of State Birds
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Constitution: Illinois's Constitution , 21st State
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Flag:

The Illinois flag is a simple representation of the Great Seal of Illinois against a white background. In 1969, the General Assembly voted to add the word "ILLINOIS" under the Great Seal of the flag. The State's name was added to the flag to ensure that people not familiar with the Great Seal of Illinois would still recognize the banner. Flag adopted 1915. Get this Flag -
Flower: Purple Violet (Viola) | Other State Flowers
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Largest Cities: Chicago | Aurora | Rockford | Joliet | Naperville | Springfield | Peoria | Elgin | Waukegan | Cicero
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Origin of State Name: Based on the Algonquin Indian word ilenweewa meaning "warriors"
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Population (2019): 12,882,135; Rank: 5 of 50 | Population Quick Facts
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Soil: Drummer
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Song:
- "Illinois" | Words by: Charles H. Chamberlin | Music by: Archibald Johnston
- Other State Songs | Sheet Music
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Tree: White Oak (Quercus alba) | Other State Trees
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County Profile: Illinois County Map Illinois County Map , 102 Counties
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Area:
- Area: 57,918 sq.mi (150,007 sq.km.), 25th
- Land: 55,593 sq.mi. (143,985 sq.km.), 24th
- Water: 2,325 sq.mi. (6,022 sq.km.), 20th
- Great Lakes: 2,546 sq.mi. (6,594 sq.km.),tied for 5th
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County Profile: Illinois County Map , 102 Counties
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Geographic Center: Logan, 28 miles northeast of Springfield
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Highest Point: Charles Mound ; 1,235 feet, (376 m), 45th tallest
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Location:
- Absolute Center: 40°0.8'N / 89°18.4'W
- Relative Center: Logan, 28 miles northeast of Springfield
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Lowest Point: Illinois; 279 feet, 32nd lowest
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Topography: Image | | Prairies and fertile plains throughout; open hills in the southern region.
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Presidential Birthplace:
- Ronald Wilson Reagan, 1981-1989 (40th) | February 6, 1911 | Tampico, Illinois
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Economy:
- Agriculture: Corn, soybeans, hogs, cattle, dairy products, wheat.
- Industry: Machinery, food processing, electric equipment, chemical products, printing and publishing, fabricated metal products, transportation equipment, petroleum, coal.
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