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Alphabetical listing of Places in Illinois

Name What Region Country Lat Long Elev ft. Pop est
O'Fallon city Illinois United States 38.59 -89.91 830
Oak city Illinois United States 37.58 -88.52 830
Oak Brook city Illinois United States 41.83 -87.93 830
Oak Forest city Illinois United States 41.60 -87.74 830
Oak Grove city Illinois United States 42.30 -87.92 830
Oak Grove city Illinois United States 41.41 -90.57 830
Oak Grove city Illinois United States 40.02 -90.41 830
Oak Hill city Illinois United States 40.79 -89.87 830
Oak Hills city Illinois United States 38.64 -89.98 830
Oak Lane city Illinois United States 41.48 -88.20 830
Oak Lawn city Illinois United States 41.71 -87.76 830
Oak Lawn Mobile Home Park city Illinois United States 42.34 -88.85 872
Oak Openings city Illinois United States 41.93 -88.46 948
Oak Park city Illinois United States 41.89 -87.78 830
Oak Point city Illinois United States 39.21 -87.98 830
Oak Ridge city Illinois United States 42.16 -88.09 859
Oak Ridge city Illinois United States 40.81 -89.44 830
Oak Ridge North city Illinois United States 42.16 -88.09 862
Oak Run city Illinois United States 40.96 -90.15 830
Oak Valley city Illinois United States 41.60 -87.93 830
Oakbrook Estates Mobile Home Park city Illinois United States 42.22 -88.28 872
Oakbrook Terrace city Illinois United States 41.85 -87.96 830
Oakcrest city Illinois United States 39.38 -87.71 830
Oakdale city Illinois United States 38.26 -89.50 830
Oakenwald city Illinois United States 41.83 -87.61 830
Oakford city Illinois United States 40.10 -89.96 830
Oakglen city Illinois United States 41.56 -87.56 830
Oakland city Illinois United States 39.65 -88.03 830
Oakland city Illinois United States 41.82 -87.60 830
Oakland Center city Illinois United States 40.23 -90.51 830
Oakley city Illinois United States 39.88 -88.81 830
Oakton city Illinois United States 42.03 -87.67 830
Oakwood city Illinois United States 40.12 -87.78 830
Oakwood Estates city Illinois United States 41.52 -88.17 830
Oakwood Heights city Illinois United States 38.88 -90.07 830
Oakwood Hills city Illinois United States 42.25 -88.24 830
Oasis Mobile Home Park city Illinois United States 42.01 -87.94 830
Oasis Trailer Park city Illinois United States 40.50 -89.01 830
Obed city Illinois United States 39.57 -88.90 830
Oblong city Illinois United States 39.00 -87.91 830
Oconee city Illinois United States 39.29 -89.11 830
Ocoya city Illinois United States 40.81 -88.68 830
Odell city Illinois United States 41.00 -88.53 830
Odgen city Illinois United States 38.45 -87.83 830
Odin city Illinois United States 38.62 -89.05 830
Ogden city Illinois United States 40.11 -87.96 830
Ogle city Illinois United States 41.11 -90.88 830
Ogles city Illinois United States 38.55 -90.05 830
Oglesby city Illinois United States 41.30 -89.06 830
Ohio city Illinois United States 41.56 -89.46 892
Ohlman city Illinois United States 39.35 -89.22 830
Oil Center city Illinois United States 38.97 -87.83 830
Oil Grove city Illinois United States 38.86 -87.64 830
Oilfield city Illinois United States 39.39 -87.99 830
Okawville city Illinois United States 38.43 -89.55 830
Old Brownfield city Illinois United States 37.36 -88.60 830
Old Colony Court city Illinois United States 42.13 -87.84 830
Old Du Quoin city Illinois United States 37.98 -89.18 400
Old Gilchrist city Illinois United States 41.23 -90.63 830
Old Kane city Illinois United States 39.19 -90.37 830
Old Kaskaskia city Illinois United States 37.95 -89.92 367
Old Kent city Illinois United States 41.52 -88.16 830
Old Marissa city Illinois United States 38.26 -89.75 830
Old Mill Creek city Illinois United States 42.42 -87.97 830
Old Mill Grove city Illinois United States 42.20 -88.08 843
Old Niota city Illinois United States 40.61 -91.30 830
Old Oaks city Illinois United States 41.57 -88.18 830
Old Oaks Estates city Illinois United States 41.64 -87.94 830
Old Pearl city Illinois United States 39.44 -90.65 830
Old Princeton city Illinois United States 39.88 -90.16 830
Old Reserve Hills city Illinois United States 41.65 -88.35 830
Old Ripley city Illinois United States 38.90 -89.57 830
Old Salem Chautauqua city Illinois United States 39.99 -89.84 830
Old Sawmill city Illinois United States 41.72 -88.15 830
Old Shawneetown city Illinois United States 37.70 -88.14 341
Old State Mobile Home Village city Illinois United States 39.45 -88.37 830
Old Stonington city Illinois United States 39.61 -89.15 830
Oldenburg city Illinois United States 38.80 -90.10 830
Oldtown city Illinois United States 37.60 -88.69 830
Olena city Illinois United States 40.79 -90.94 830
Olga city Illinois United States 37.99 -88.58 413
Olin city Illinois United States 40.75 -89.77 830
Olive Branch city Illinois United States 37.17 -89.35 331
Oliver city Illinois United States 41.80 -90.07 830
Oliver city Illinois United States 39.48 -87.68 830
Oliver Lane Subdivision city Illinois United States 42.11 -87.86 830
Olivet city Illinois United States 39.94 -87.64 830
Olmsted city Illinois United States 37.18 -89.09 367
Olney city Illinois United States 38.73 -88.09 830
Olsen-Hansen Row Houses city Illinois United States 41.91 -87.63 830
Olson's Subdivision city Illinois United States 42.14 -87.85 830
Olympia Fields city Illinois United States 41.51 -87.67 830
Omaha city Illinois United States 37.89 -88.30 360
Omar city Illinois United States 37.50 -88.97 830
Omega city Illinois United States 38.70 -88.78 830
Onarga city Illinois United States 40.72 -88.01 830
Oneco city Illinois United States 42.49 -89.66 849
Oneida city Illinois United States 41.07 -90.23 830
Ontario city Illinois United States 41.08 -90.31 830
Ontarioville city Illinois United States 41.99 -88.15 830
Opdyke city Illinois United States 38.26 -88.79 830
Ophiem city Illinois United States 41.25 -90.39 830
Oquawka city Illinois United States 40.93 -90.95 830
Orange city Illinois United States 39.21 -87.82 830
Orange Prairie city Illinois United States 40.78 -89.67 830
Orangemans Hall city Illinois United States 41.31 -90.61 830
Orangeville city Illinois United States 42.47 -89.64 849
Oraville city Illinois United States 37.87 -89.38 400
Orchard Subdivision city Illinois United States 42.12 -87.82 830
Orchardville city Illinois United States 38.51 -88.65 830
Oreana city Illinois United States 39.94 -88.87 830
Oregon city Illinois United States 42.01 -89.33 830
Orient city Illinois United States 37.92 -88.98 400
Originally named Warren, IL in 1840. city Illinois United States 40.79 -90.99 830
Orio city Illinois United States 38.55 -87.78 830
Orion city Illinois United States 41.35 -90.38 830
Orland Hills city Illinois United States 41.59 -87.84 830
Orland Park city Illinois United States 41.63 -87.85 830
Orleans city Illinois United States 39.72 -90.08 830
Ormonde city Illinois United States 40.86 -90.61 830
Osbernville city Illinois United States 39.76 -89.18 830
Osborn city Illinois United States 41.52 -90.27 830
Osceola city Illinois United States 41.21 -89.78 830
Osco city Illinois United States 41.35 -90.28 830
Oskaloosa city Illinois United States 38.76 -88.65 830
Osman city Illinois United States 40.30 -88.47 830
Ospur city Illinois United States 40.09 -88.96 830
Oswego city Illinois United States 41.68 -88.35 830
Oswego Village Square city Illinois United States 41.69 -88.37 830
Ottawa city Illinois United States 41.35 -88.84 830
Otter (historical) city Illinois United States 41.18 -88.78 830
Otterville city Illinois United States 39.05 -90.40 830
Otto city Illinois United States 41.05 -87.89 830
Otto (historical) city Illinois United States 40.30 -90.21 830
Ottville city Illinois United States 41.35 -89.26 830
Oury Point city Illinois United States 42.13 -87.81 830
Owaneco city Illinois United States 39.48 -89.19 830
Owen Center city Illinois United States 42.37 -89.12 830
Oxford (historical) city Illinois United States 41.17 -90.43 830
Oxville city Illinois United States 39.70 -90.56 830
Ozark city Illinois United States 37.54 -88.76 830

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