2025 Holiday Schedule Illinois Calendar. 2025 holidays in illinois office holidays provides calendars with dates and information on public holidays and bank holidays in key countries around the world. Whereas, the illinois revised statutes provide the days that state and county offices may be closed.
Comprehensive list of national and regional public holidays that are celebrated in illinois, usa during 2025 with dates and information on the origin and meaning of holidays. Holidays illinois (united states) here you will find the public holidays for illinois of the current year ( 2025 ), of the following two years ( 2025 ), ( 2026 ), as well as of the past.