National Day

National Illinois Day

Celebrated on 12/07/2026

Quick Fact

Illinois became the 21st state on December 3, 1818, but National Illinois Day is celebrated on February 12, which is also Abraham Lincoln's birthday—Lincoln being one of Illinois' most famous sons. The holiday was established to honor the state's rich history, from the Cahokia Mounds to the birthplace of the skyscraper in Chicago. Interestingly, Illinois is home to the only river that flows backwards, the Chicago River, which was reversed in 1900 to improve sanitation.

Origins and Establishment of National Illinois Day

National Illinois Day was officially established in 2017 by the National Day Calendar to celebrate the state's unique contributions to American history and culture. The date of February 12 was chosen to coincide with the birthday of Abraham Lincoln, the 16th President of the United States, who spent much of his life in Illinois and is closely associated with the state. The holiday aims to highlight Illinois' role as a crossroads of the nation, from its Native American heritage to its industrial and agricultural prowess.

Evolution and Modern Commemoration

Since its inception, National Illinois Day has grown in popularity, with schools, museums, and historical societies hosting special events. In Chicago, the day is marked by tours of the Lincoln Park Zoo and the Art Institute of Chicago, while downstate communities celebrate with reenactments at Lincoln's New Salem and the Abraham Lincoln Presidential Library and Museum. Social media campaigns encourage residents to share their favorite Illinois landmarks and foods, such as deep-dish pizza and Chicago-style hot dogs.

Facts & General Observations

  • Illinois is the fifth most populous state in the U.S., with over 12.5 million residents, and its largest city, Chicago, is the third most populous city in the country.
  • The state is home to the world's first skyscraper, the Home Insurance Building, built in Chicago in 1885, and the Willis Tower (formerly Sears Tower) remains one of the tallest buildings in the Western Hemisphere.
  • Illinois produces more pumpkins than any other state, with over 500 million pounds harvested annually, and is also a leading producer of soybeans and corn.

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