List of county courthouses in Illinois

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Courthouse Image Location Year Comments Adams Adams County Courthouse, Quincy.jpg Quincy
39°56′6″N 91°24′28″W / 39.93500°N 91.40778°W / 39.93500; -91.40778 (Adams County Courthouse) 1950[2]:15 Built to replace a former courthouse destroyed by a tornado[2]:15 Alexander Alexander County Courthouse, Cairo.jpg Cairo
37°0′20″N 89°10′34″W / 37.00556°N 89.17611°W / 37.00556; -89.17611 (Alexander County Courthouse) 1965[3] Modernist building from the 1960s;[2]:16 one of two extant courthouses in Cairo, along with the Old Customhouse.[4]Previous courthouse in Thebes is still standing[5] Bond BondCountyCourthouse GreenvilleIL.jpg Greenville
38°53′33″N 89°24′46″W / 38.89250°N 89.41278°W / 38.89250; -89.41278 (Bond County Courthouse) 1884[2]:19 Bond County’s fourth courthouse[6] Boone Boone County Courthouse, Illinois.jpg Belvidere
42°15′54″N 88°50′42″W / 42.26500°N 88.84500°W / 42.26500; -88.84500 (Boone County Courthouse) 1855[2]:20 Second-oldest Illinois courthouse in continuous use;[2]:
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