: Sometimes municipalities offer bonds directly to residents. You can monitor the Illinois Capital Markets site for official state bond notices and underwriters.

: You can buy "New Issues" (brand new debt) or "Secondary Market" bonds (existing bonds sold by other investors).

You can buy bonds directly when the State of Illinois or its local municipalities first offer them to the public.

: Use your broker's search tools (like the Charles Schwab Fixed Income Table or Fidelity's Bond Screener) to filter for "Illinois" and "Municipal" bonds.

This is the most common method for retail investors. Most major brokerage firms allow you to search for Illinois-specific bonds on their platforms.