Illinois State Government
Illinois Department of Agriculture
Illinois Department of Commerce & Economic Opportunity (DCEO)
Illinois Department of Human Services
Illinois Department of Corrections
Illinois Department of Employment Security (IDES)
Illinois Department of Natural Resources:
- Illinois Natural History Survey (INHS)
Geographic Information System at INHS
Illinois Natural Resources Geospatial Data Clearinghouse
Office of Mines and Minerals
Illinois State Geological Survey
Illinois State Museum
Illinois State Water Survey
Illinois Waste Management and Research Center
Illinois Department of Transportation (DOT)
Illinois Environmental Protection Agency (EPA)
Illinois Housing Development Authority