StateDocuments.comAn independent guide to state document offices

Illinois: official document offices

Where to go in Illinois for common state documents. Each link goes to the government office itself.

Official offices

Apostilles

Illinois Secretary of State, Index Department

www.ilsos.gov

Open official site

Business filings

Illinois Secretary of State, business filings

www.ilsos.gov

Open official site

Vital records

dph.illinois.gov

Open official site

Courts (judicial branch)

www.illinoiscourts.gov

Open official site

Guides for Illinois

Links checked November 12, 2026. Not affiliated with the State of Illinois or any government. Not legal advice.