Illinois is home to approximately 12.6 million people, centred on Chicago — the third largest US city and a major hub for finance, commerce, and transportation. Illinois observes all 11 federal public holidays and additionally recognises Casimir Pulaski Day (first Monday in March), reflecting the state's significant Polish-American community.
In 2027, Illinois observes 11 public holidays in total — 11 nationwide holidays that apply across all of United States.
Public Holidays 2027
11 holidays
Illinois — All Public Holidays 2027
| Date | Day | Holiday | Type |
|---|---|---|---|
| 1 Jan 2027 | Fri | New Year's Day | Nationwide |
| 18 Jan 2027 | Mon | Birthday of Martin Luther King, Jr. | Nationwide |
| 15 Feb 2027 | Mon | Washington's Birthday | Nationwide |
| 31 May 2027 | Mon | Memorial Day | Nationwide |
| 18 Jun 2027 | Fri | Juneteenth National Independence Day (observed) | Nationwide |
| 5 Jul 2027 | Mon | Independence Day (observed) | Nationwide |
| 6 Sept 2027 | Mon | Labor Day | Nationwide |
| 11 Oct 2027 | Mon | Columbus Day | Nationwide |
| 11 Nov 2027 | Thu | Veterans Day | Nationwide |
| 25 Nov 2027 | Thu | Thanksgiving Day | Nationwide |
| 24 Dec 2027 | Fri | Christmas Day (observed) | Nationwide |
School Holidays 2027
Illinois — School Holidays 2027
Winter Break
17.02.2027 - 21.02.2027
Spring Break
No break
Summer Holidays
06.06.2027 - 25.08.2027
Christmas Break
22.12.2027 - 04.01.2028