Government
| Governor: | Patrick Quinn (D) |
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| Treasurer: | Dan Rutherford (D) |
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| Senators: | Mark Kirk (R)
Richard J. Durbin (D) |
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| Entered Union: | December 3, 1818 |
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| U.S. Representatives: | 19 |
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Area
| Total Area | 149,995,400 km2 / 57,913,548 mi2 |
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| Land Area | 143,793,362 km2 / 55,518,927 mi2 |
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| Water Area | 6,202,038 km2 / 2,394,620 mi2 |
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| Water Area Percentage | 4.13 % |
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Time Zone
| Standard Time | GMT -6 |
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| Daylight-Saving Time | GMT -5 |
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Weather
| Record High Temperature | 117°F / 47°C , East St. Louis (July 14, 1954) |
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| Record Low Temperature | -36°F / -38°C , Congerville (January 5, 1999) |
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GDP
| Total Gross Domestic Product (USD Billions) | $652 (2010) |
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| Per Capita Real GDP (USD) | $45,258 (2010) |
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Population
| Population | 12,830,632 (2010) |
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| Under 19 Population | 3,496,522 / 27.3% (2010) |
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| 65 and older Population | 1,609,213 / 12.5% (2010) |
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| Male Population | 6,292,276 / 49% (2010) |
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| Female Population | 6,538,356 / 51% (2010) |
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| Non-English Speaker (at home) | 1,760,058 (2000) |
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| Net International Immigration | 35,839 (2009) |
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| Birth Rate (per 1,000) | 13.3 per 1,000 (2009) |
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| Percent of People Under Poverty Level (%) | 13.3% (2009) |
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Major Cities
| City | Population (2010) |
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| Chicago | 2,695,598 |
| Aurora | 197,899 |
| Rockford | 152,871 |
Employment
| Employment | 5,610,700 (2010) |
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| Average Weekly Wage (USD) | $796 (2010) |
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| Unemployment Rate (%) | 10% (2011) |
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Expenditures
| Per Capita State Spending (USD) | $4,727 (2010) |
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| Energy Expenditures per Person (USD) | $3,139 (2009) |
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| Expenditures of State and Local Government Employee-Retirement Systems (USD Thousands) | $11,060 (2010) |
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Revenue
| Personal Income (USD Millions) | $41,856 (2009) |
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| State Internal Revenue Collection (USD Thousands) | $119,116 (2011) |
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| Cash and Security Holdings by State Government (USD Thousands) | $112 (2010) |
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| Per Capita State Tax Collection (USD) | $2,322 (2010) |
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Education
| High School Graduation Rate (%) | 86.9% (2010) |
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| Percent of Population with a Bachelor's Degree (%) | 30.8% (2010) |
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| Percent of Population with an Advanced Degree (%) | 11.5% (2010) |
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Largest Universities
| University of Illinois at Urbana-Champaign |
| Northern Illinois University |
| University of Illinois at Chicago |
Logistics
| Public Road Length (Miles) | 139,491 Miles (2008) |
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| Gas Tax Rate (%) | 39.9% (2011) |
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| Number of Public Airports | 107 (2010) |
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Main Airports
| Code | Name | City |
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| BMI | Central IL Regional Airport at Bloomington-Normal | Bloomington-Normal Airport |
| MDW | Chicago Midway International | Chicago |
| MLI | Quad City International | Moline |
| ORD | Chicago O'Hare International | Chicago |
| PIA | General Downing - Peoria | Peoria |
Ports
| Chicago |
| Decatur |
| Mascoutah |
| Peoria |
| Rock Island |
| Rockford |
| Waukegan |
| Wheeling |
Sources:
Air Nav (2009)
American Association of Port Authorities (AAPA) (2009)
Bureau of Business and Economic Research (2009)
Bureau of Labor Statistics (2009)
Bureau of Transportation (2008)
Education Portal (2010)
Federal Aviation Administration (2009)
Internal Revenue Service (2009)
National Association of State Budget Officers (2008)
National Climatic Data Center (2009)
National Governors Association (2011)
Tax Foundation (2008)
U.S. Census Bureau (2000, 2007, 2008, 2009)
U.S. Department of Commerce Bureau of Economic Analysis (2009)
U.S. Energy Information Administration (2008)
U.S. House of Representatives (2011)
United States Senate (2011)
