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The Communities of Illinois (IL)



Select by first two letters of name

OA OB OC OD OG OH
OI OK OL OM ON OP
OQ OR OS OT OU OV
OW OX OZ      
 

Notes about our Index:

  • Some communities no longer exist and have been marked with '(H)' to indicate that they are historic.
  • When two (or more) communities share the same name, we try to give some kind of location to help you pick.
 

O'Fallon [Saint Clair County]

O'Fallon Depot [Saint Clair County]

O'Fallon Junction [Saint Clair County]


Oak [Pope County]

Oak Brook [DuPage County]

Oak Brook Terrace [DuPage County]

Oak Forest [Cook County]

Oak Glen [Cook County]

Oak Grove [Cass County]

Oak Grove [Lake County]

Oak Grove [McLean County]

Oak Grove [Rock Island County]

Oak Grove Park [Rock Island County]

Oak Grove Park [Woodford County]

Oak Hill [Lake County]

Oak Hill [Peoria County]

Oak Hill [Williamson County]

Oak Hills [Saint Clair County]

Oak Lane [Will County]

Oak Lawn [Cook County]

Oak Meadows [DuPage County]

Oak Mound [Fulton County]

Oak Openings [Kane County]

Oak Park [Cook County]

Oak Point [Clark County]

Oak Ridge [Lake County]

Oak Ridge [Menard County]

Oak Ridge [Woodford County]

Oak Ridge North [Lake County]

Oak Run [Knox County]

Oak Spring Woods [Lake County]

Oak Valley [Will County]

Oak Woods [Cook County]

Oakalla [Iroquois County]

Oakcrest [Clark County]

Oakdale [Cook County]

Oakdale [Washington County]

Oakdale Woods [DuPage County]

Oakenwald [Cook County]

Oakford [Menard County]

Oakglen [Cook County]

Oakland [Coles County]

Oakland [Cook County]

Oakland [Saint Clair County]

Oakland Center [Schuyler County]

Oaklawn [Vermilion County]

Oakley [Macon County]

Oakton [Cook County]

Oaktown [Pulaski County]

Oakville [Union County]

Oakville Station [Washington County]

Oakwood [DuPage County]

Oakwood [Peoria County]

Oakwood [Vermilion County]

Oakwood Estates [Will County]

Oakwood Heights [Madison County]

Oakwood Hills [McHenry County]

Oakwood Knolls [Lake County]

Oakwood Shores [McHenry County]

Oautoga Bluff [Madison County]


Obed [Shelby County]

Oblong [Crawford County]


Oconee [Shelby County]

Oconee Station [Shelby County]

Ocoya [Livingston County]


Odell [Livingston County]

Odgen [Wabash County]

Odin [Marion County]

Odum Spur [Franklin County]


Ogden [Champaign County]

Ogden Park [Cook County]

Ogle [Mercer County]

Ogle [Ogle County]

Ogles [Saint Clair County]

Oglesby [La Salle County]


Ohio [Bureau County]

Ohio Farm [Kendall County]

Ohio Grove [DeKalb County]

Ohlman [Montgomery County]


Oil Center [Crawford County]

Oil Center [Marion County]

Oil Grove [Crawford County]

Oilfield [Clark County]


Okaw [Washington County]

Okawville [Washington County]

Oklahoma [Kankakee County] (H)


Old Brownfield [Pope County]

Old Camp [Williamson County]

Old Colony Court [Cook County]

Old Du Quoin [Perry County]

Old Evansville (H)

Old Farm [DuPage County]

Old Gilchrist [Mercer County]

Old Harmony [Saint Clair County]

Old Kane [Greene County]

Old Kaskaskia [Randolph County]

Old Kent [Will County]

Old Marissa [Saint Clair County]

Old Mill Creek [Lake County]

Old Mill Grove [Lake County]

Old Niota [Hancock County]

Old Oaks [Will County]

Old Oaks Estates [Will County]

Old Orchard [Cook County]

Old Pearl [Pike County]

Old Princeton [Cass County]

Old Ripley [Bond County]

Old Salem Chautauqua [Menard County]

Old Sawmill [Will County]

Old Shawneetown [Gallatin County]

Old Stonington [Christian County]

Old Westville (H)

Olde Salem [Cook County]

Oldenburg [Madison County]

Oldtown [Saline County]

Olena [Henderson County]

Olga [Hamilton County]

Olin [Peoria County]

Olinda [Pike County]

Olive Branch [Alexander County]

Oliver [Edgar County]

Oliver [Whiteside County]

Olivet [Vermilion County]

Olmsted [Pulaski County]

Olney [Richland County]

Olympia Fields [Cook County]

Olympia Gardens [Cook County]

Olympic Terrace [DuPage County]

Olympic Village [Cook County]


Omaha [Gallatin County]

Omar [Johnson County]

Omega [Marion County]

Omph Ghent [Madison County]


Onarga [Iroquois County]

Oneco [Stephenson County]

Oneida [Knox County]

Ontario [Knox County]

Ontarioville [DuPage County]


Opdyke [Jefferson County]

Opheim [Henry County]

Ophiem [Henry County]


Oquawka [Henderson County]


Ora [Jackson County]

Orange [Clark County]

Orange [Cook County]

Orange Prairie [Peoria County]

Orangemans Hall [Mercer County]

Orangeville [Stephenson County]

Oraville [Jackson County]

Orchard Heights [Richland County]

Orchard Mines [Peoria County]

Orchard Place [Cook County] (H)

Orchard Valley [Lake County]

Orchardville [Wayne County]

Ordill [Williamson County]

Oreana [Macon County]

Oregon [Ogle County]

Orient [Franklin County]

Orient Junction [Franklin County]

Orio [Wabash County]

Orion [Henry County]

Orland [Cook County]

Orland Hills [Cook County]

Orland Park [Cook County]

Orleans [Morgan County]

Orleans Terrace [DuPage County]

Ormonde [Warren County]

Orville [Pope County]


Osage [Franklin County]

Osbernville [Christian County]

Osborn [Rock Island County]

Osceola [Stark County]

Osco [Henry County]

Oskaloosa [Clay County]

Osman [McLean County]

Ospur [De Witt County]

Ossami Lake [Tazewell County]

Ostend [McHenry County]

Oswego [Kendall County]


Otsego [Lake County]

Ottawa [La Salle County]

Otter [La Salle County] (H)

Otter Creek [Jersey County]

Otterville [Jersey County]

Otto [Fulton County] (H)

Otto [Kankakee County]

Otto Mall [Cook County]

Ottville [Bureau County]


Oury Point [Cook County]

Outer Depot [Cook County]

Outten [Macon County]


Ovid [Lee County]

Ovington [Cook County]


Owaneco [Christian County]

Owen [Winnebago County]

Owen Center [Winnebago County]

Owens Ferry [Massac County]

Owens Siding [DuPage County]

Owsley [Marion County]


Ox Bow [Putnam County]

Oxford [Henry County] (H)

Oxville [Scott County]


Ozark [Johnson County]
 

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This page was last modified/updated: 03 Apr 2024