Illinois General Assembly — this site includes bills and resolutions before the legislature, Illinois law in the form of the Compiled Statutes, the Illinois Constitution, and regulations of state agencies through the Administrative Code and weekly Illinois Register.
Illinois Department of Revenue: Tax Forms/Publications — find tax forms for Illinois.
Illinois Digital Archives — search and browse digital archives from Illinois libraries and other cultural institutions. This site includes photographs, manuscripts, letters, oral histories, government documents, postcards, posters and more.
State of Illinois web site — a centralized website for State of Illinois government news and links to agencies.
State Government: USA.gov — provides links to websites of individual states and territories, and sites related to state and local governments.
Local Governments: USA.gov — USA.gov hosts this page of useful links to sites related to local governments.