ILLINOIS ILLINOIS U.S POPULATION INDUSTRY NATURAL RESOURCES GEOGRAPHIC INFORMATION YEAR OF ADMISSION 1818 ORDER OF ADMISSION 21ST DATE OF CURRENT STATE CONSTITUTION 1971 CAPITAL SPRINGFIELD POPULATION 11896000 1997 LAND AREA 55593 SQ MI POPULATION DENSITY 212.8 PEOPLE PER SQ MI NICKNAME PRAIRIE STATE LAND OF LINCOLN MOTTO STATE SOVEREIGNTY NATIONAL UNION GOVERNMENT CONFIGURATION BICAMERAL LEGISLATURE HOUSES 2 NUMBER OF STATE SENATORS 59 NUMBER OF STATE REPRESENTATIVES 118 NUMBER OF REPRESENTATIVES IN U.S CONGRESS 20 MAIN INDUSTRIES SERVICES MANUFACTURING TRAVEL WHOLESALE AND RETAIL TRADE FINANCE INSURANCE REAL ESTATE CONSTRUCTION HEALTH CARE AGRICULTURE MAJOR NATURAL RESOURCES FERTILE SOIL BITUMINOUS COAL PEAT PETROLEUM CLAY GRAVEL LIMESTONE SAND SANDSTONE
