American symbols

Illinois Abbreviation

Seal and Nickname

What is the Abbreviation for Illinois?
The two digit state code or abbreviation of Illinois (IL) known as the "Prairie State". Illinois has 102 counties, and the capital of the State is Springfield.


The two digit state code or abbreviation of Illinois is determined by taking the 'First Two Letters' of the State's name.  The two letter, no-period state abbreviation of IL is recommended by the U.S. Postal Service and should always be used where a ZIP code follows. The purpose of introducing the IL Abbreviation for Illinois was to make room for ZIP codes in the mailing addresses. There was no attempt to standardize the format of the abbreviations which is why they are usually memorized.

Map of Illinois


AP State Abbreviation
The AP State Abbreviations, the old State Abbreviations, are still in use. The AP State Abbreviation for Illinois is:


The Associated Press (AP) style of abbreviation, the old style, is still used by journalists and business people. As some two digit state codes are determined from the first and last letter of the old abbreviation they are important to those learning about the abbreviations of the US States.

Illinois - (IL) - Ill.

Map showing location of Illinois in USA

Where is Illinois? (IL)

The State of Illinois is located in the mid west in north central United States.


Abbreviation of Illinois - Two Digit State Code Rules
There is no standard format to the State Abbreviations. It's therefore not surprising that you needed to know "What is the Abbreviation for Illinois?  The rules to determine the state acronym, or abbreviation is by the 'First Two Letters', the 'First and Last Letter', the 'Initial Letter of 2 words' and those determined by the 'First and Last Letter of the Old Abbreviation'.

Play the Abbreviation of States Game IL!
You now know that the Illinois abbreviation is IL. But what about the abbreviation for all the other US states? We have developed an Abbreviation of States Game to play. It's a totally free, multiple choice, online, picture quiz game with no downloads required. Free fun as you learn!


Illinois Abbreviation (IL)

Initials & Acronym - IL
Initials determined by the 'First Two Letters'
Facts about AP style
Illinois - (IL) - Ill.
What state is IL? Abbr. of states
Interesting facts about the two digit code
Old states initials, letters and acronym
Two letter abbreviation of Illinois (IL)

Abbreviation (IL)

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