When looking for the perfect home, investment real estate or property, its often useful to have a complete list of Counties and communities. Below you will find a complete list of counties in the state of Illinois. Under each is a list of lakes and rivers located in each county.

Counties in Illinois
• Adams, Illinois
• Alexander, Illinois
    Horseshoe Lake
• Bond, Illinois
• Boone, Illinois
• Brown, Illinois
• Bureau, Illinois
    Spoon River,
• Calhoun, Illinois
• Carroll, Illinois
• Cass, Illinois
• Champaign, Illinois
    Little Vermilion River
    Sangamon River
• Christian, Illinois
• Clark, Illinois
• Clay, Illinois
• Clinton, Illinois
    Kaskaskia River
• Coles, Illinois
• Cook, Illinois
• Crawford, Illinois
• Cumberland, Illinois
• De Kalb, Illinois
• De Witt, Illinois
• Du Page, Illinois
• Edgar, Illinois
• Edwards, Illinois
• Effingham, Illinois
• Fayette, Illinois
• Ford, Illinois
    Mackinaw River
    Vermilion River
• Franklin, Illinois
• Fulton, Illinois
• Gallatin, Illinois
• Greene, Illinois
• Grundy, Illinois
• Hamilton, Illinois
• Hancock, Illinois
• Hardin, Illinois
• Henderson, Illinois
• Henry, Illinois
    Edwards River
• Iroquois, Illinois
• Jackson, Illinois
• Jasper, Illinois
• Jefferson, Illinois
    Big Muddy River
• Jersey, Illinois (Calhoun County)
• Jo Daviess, Illinois
    Apple River
    Plum River,
• Johnson, Illinois
• Kane, Illinois
• Kankakee, Illinois
• Kendall, Illinois
• Knox, Illinois
• La Salle, Illinois
• Lake, Illinois
• Lawrence, Illinois
• Lee, Illinois
    Kyte River,
• Livingston, Illinois (Livingston County)
    Vermilion River
• Logan, Illinois
• Macon, Illinois
• Macoupin, Illinois
• Madison, Illinois
• Marion, Illinois
    Skillet Fork
• Marshall, Illinois
• Mason, Illinois
• Massac, Illinois
• McDonough, Illinois
• McHenry, Illinois
    Kishwaukee River
• McLean, Illinois
• Menard, Illinois
• Mercer, Illinois
• Monroe, Illinois
• Montgomery, Illinois
• Morgan, Illinois
• Moultrie, Illinois
• Ogle, Illinois
• Peoria, Illinois
• Perry, Illinois
• Piatt, Illinois
• Pike, Illinois
• Pope, Illinois
• Pulaski, Illinois
• Putnam, Illinois
• Randolph, Illinois
• Richland, Illinois
• Rock Island, Illinois
• Saint Clair, Illinois
• Saline, Illinois
• Sangamon, Illinois
    Lake Springfield
• Schuyler, Illinois
• Scott, Illinois
• Shelby, Illinois
• Stark, Illinois
• Stephenson, Illinois
• Tazewell, Illinois
    Peoria, Lake
• Union, Illinois (Union County)
    Cache River
• Vermilion, Illinois
• Wabash, Illinois
• Warren, Illinois
    La Moine River
• Washington, Illinois (Washington County)
    Little Muddy River
• Wayne, Illinois
• White, Illinois
• Whiteside, Illinois
• Will, Illinois (Will County)
• Williamson, Illinois
• Winnebago, Illinois
• Woodford, Illinois