The capital of Illinois is Springfield.

The 2-Letter Postal Abbreviation / Code for Illinois: IL

For a short while in 1963, the U.S. Postal Office recommended "ILL" as the abbreviation for Illinois. Toward the end of 1963, the Post Office made the currently used "IL" the official abbreviation.

Typical abbreviation for Illinois: Ill.

The pronunciation of Illinois:

When the people of Illinois refer to themselves: 1:

Time Zone: The state of Illinois is in the Central Time (CST/CDT) zone and observes daylight saving time.

Nicknames for Illinois: "The Prairie State"; "Land of Lincoln"

State Motto: "State Sovereignty, National Union"

State Bird: Cardinal (cardinalis cardinalis)

State Tree: White Oak (quercus alba)

State Flower: Purple Violet (viola)

State Song: "Illinois"

Statehood: Illinois became the 21st state on Dec 3, 1818.

Other Roadside Stops ...

Communities in Illinois

States Ranked by Population

States Ranked by Area

States Ranked by Population Density

States & Provinces Ranked by Population

States & Provinces Ranked by Area

States & Provinces Ranked by Population Density

The Lighthouses of Illinois