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Illinois Government Information Resources

State Government the State’s official web portal.

The 3 Branches of Illinois State Government, plus the Governor’s Homepage and the Illinois Compiled Statues.

State Government Resources

Living in Illinois

Illinois Publications & Reports

  • Illinois Blue Book: information about state officials, government offices, and state facts & history
  • Illinois Handbook of Government: features new congressional & legislative district maps, descriptions of various government offices, and names of current government officials.
  • Illinois report 2014: helps decision makers tackle the state's pressing problems.

Illinois Directories & Databases Online

State Repositories & Historical Research

Illinois State Library &  Illinois Depository Libraries: libraries that collect & distribute publications of state government agencies.

Illinois State Archives & Illinois Regional Archives Depository (IRAD) contain archival information of state public records & local governmental agencies.

Illinois Digital Archives contains historic Illinois images, oral histories, manuscripts, letters, documents, videos, newspapers, and more.

Genealogical Research contains Illinois birth, census, death, land, marriage, and military records.

Cook County Government

Directory of Cook County Elected Officials

Cook County Clerk: includes information on real estate taxes &  how to request birth, marriage & death certificates.

Cook County Assessor: home & property value assessments, exemptions, and appeal information.

Special Closing

May 30, Memorial Day

Interim Hours

May 22 - June 5
Monday - Thursday: 7:30 a.m. - 4:30 p.m.
Friday - Sunday: Closed

Summer Hours

Starting June 6
Monday - Thursday: 7:30 a.m. - 9 p.m.
Friday - Sunday: Closed