List of Illinois townships

Of the 102 counties of the state of Illinois, 84 are organized into civil townships, usually referred to as simply "townships" in state law.

The legal name of each township is the form "___ Township" or "Town of ____". State law specifies that no two townships in Illinois shall have the same name, and that, if the Illinois Secretary of State compares the township abstracts and finds a duplicate, the county that last adopted the name shall instead adopt a different name at the next county board meeting. Nonetheless, a few township names remain duplicates in Illinois.

Cook County is organized into townships except for the city of Chicago: in 1902, voters in Chicago chose to abolish the eight townships in the city.

There are 17 counties with no township government: Alexander, Calhoun, Edwards, Hardin, Johnson, Massac, Menard, Monroe, Morgan, Perry, Pope, Pulaski, Randolph, Scott, Union, Wabash, and Williamson. Each of those counties is instead divided into precincts.

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