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Illinois: General Facts
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| Illinois State Capital |
10 largest Illinois cities |
| Springfield ( 111,454 ) |
1. Chicago (2,896,016)
2. Rockford (150,115)
3. Aurora (142,990)
4. Naperville (128,358)
5. Peoria (112,936) |
6. Springfield (111,454)
7. Joliet (106,221)
8. Elgin (94,487)
9. Waukegan (87,901)
10. Cicero (85,616) |
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| Illinois Area Codes |
| 217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 815, 847, 872 |
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| Number of counties |
Illinois: Area |
| 102 |
Total Area |
57,914 sq mi (25th) |
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Water Area |
2,331 sq mi (4.0% of total area) (20th) |
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| Illinois: Population 12,831,970 |
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| Illinois: Nickname(s) |
| Prairie State |
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| Illinois: Main Agricultural Products & Exports |
| Wheat, Soybeans, Corn, Cattle, Pork, Food Products, Meat Packing. |
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| Illinois: Main Industrial Products & Exports |
| Auto Parts, Engines, Transmissions, Trailers, Construction Machinery, Derricks, Lab Chemicals, Auto Body Parts, Bio-Medical Products, Chemicals, Iron & Steel Products, Pharmaceutical Products, Jet Engines, Books & Brochures, Lab Chemicals, Diagnostic Apparatus, Medical, Dental & Surgical Equipment, Fertilizers. |
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| Illinois: Other Economic Activities |
| Financial Services, Transportation Services. |
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