| Oldsmar, Florida | Oliver, Georgia | Oldtown, Idaho |
| Old Ripley, IllinoisOld Ripley is a village located in Bond County, Illinois. As of the 2000 census, the village had a total population of 127. Geography Old Ripley is located at 38°53'37" North, 89°34'15" West (38. 893530, -89. According to the United States Census Bureau, | Olympia Fields, IllinoisOlympia Fields is a village located in Cook County, Illinois. As of the 2000 census, the village had a total population of 4,732. Geography Olympia Fields is located at 41°31'6" North, 87°41'34" West (41. 518290, -87. According to the United States Census | Old Shawneetown, IllinoisOld Shawneetown is a village located in Gallatin County, Illinois. As of the 2000 census, the village had a total population of 278. Geography Old Shawneetown is located at 37°41'54" North, 88°8'13" West (37. 698197, -88. According to the United States Ce |
| Old Mill Creek, IllinoisOld Mill Creek is a village located in Lake County, Illinois. As of the 2000 census, the village had a total population of 251. Geography Old Mill Creek is located at 42°25'19" North, 87°58'57" West (42. 421820, -87. According to the United States Census | Olmsted, IllinoisOlmsted is a village located in Pulaski County, Illinois. As of the 2000 census, the village had a total population of 299. Geography Olmsted is located at 37°10'51" North, 89°5'11" West (37. 180733, -89. According to the United States Census Bureau, the | Olney, IllinoisOlney is a city located in Richland County, Illinois. As of the 2000 census, the city had a total population of 8,631. It is the county seat of Richland County 6. Geography Olney is located at 38°43'50" North, 88°4'55" West (38. 730546, -88. According to |
| Oldenburg, IndianaOldenburg is a town located in Franklin County, Indiana. As of the 2000 census, the town had a total population of 647. Geography Oldenburg is located at 39°20'22" North, 85°12'17" West (39. 339474, -85. According to the United States Census Bureau, the t | Olds, IowaOlds is a city located in Henry County, Iowa. As of the 2000 census, the city had a total population of 249. Geography Olds is located at 41°8'0" North, 91°32'44" West (41. 133346, -91. According to the United States Census Bureau, the city has a total ar | Olin, IowaOlin is a city located in Jones County, Iowa. As of the 2000 census, the city had a total population of 716. Geography Olin is located at 41°59'51" North, 91°8'24" West (41. 997599, -91. According to the United States Census Bureau, the city has a total a |
| Ollie, Iowa | Olmitz, Kansas | Olathe, Kansas |
| Olpe, Kansas | Olivet, Kansas | Olsburg, Kansas |
| Olive Hill, Kentucky | Old Brownsboro Place, Kentucky | Old Jefferson, Louisiana |
| Olla, Louisiana | Old Town, Maine | Olive Township, Clinton County, Michigan |
| Olivet, Michigan | Oliver Township, Huron County, Michigan | Oldenzaal |
| Olst-Wijhe | Oldebroek | Olive Township, Ottawa County, Michigan |
| Olney Township, Minnesota | Olivia, Minnesota | Olive Branch, Mississippi |
| Olympian Village, Missouri | Old Monroe, Missouri | Olean, Missouri |
| Olivette, Missouri | Old Agency, Montana | Oliver Township, Kalkaska County, Michigan |
| Old Appleton, Missouri | Old Bridge, New Jersey | Old Bridge Township, New Jersey |
| Oldmans Township, New Jersey | Olivet, New Jersey | Old Bethpage, New York |
| Old Brookville, New York | Old Westbury, New York | Olcott, New York |
| Old Field, New York | Olive, New York | Old Fort, North Carolina |
| Olde West Chester, Ohio | Olmsted Falls, Ohio | Old Washington, Ohio |
| Old Eucha, Oklahoma | Olustee, Oklahoma | Olofström Municipality |
| Oley Township, Pennsylvania | Oliver, Pennsylvania | Oliver Township, Jefferson County, Pennsylvania |
| Old Forge, Lackawanna County, Pennsylvania | Olyphant, Pennsylvania | Old Lycoming Township, Pennsylvania |
| Oliver Township, Mifflin County, Pennsylvania | Old Orchard, Pennsylvania | Oliver Township, Perry County, Pennsylvania |
| Olar, South Carolina | Olanta, South Carolina | Olivet, South Dakota |
| Oldham, South Dakota | Olmos Park, Texas | Olmito, Texas |
| Old River-Winfree, Texas | Olivarez, Texas | Olton, Texas |
| Olney, Texas | Old Tappan, New Jersey | Old Bennington, Vermont |
| Oliver, Wisconsin | Olive Township, Michigan | Oliver Township, Michigan |
| Oliver Township, Pennsylvania | Old boy network | Old World |
| Olivier Messiaen | Old Bedford River | Olaf II of Norway |
| Oliver Springs, Tennessee | Oldenburg (district) | Old Kingdom |
| Olen | Ole Torvalds | Oleg of Kiev |
| Olfaction | Oliver Twist | Olry Terquem |
| Olwë | Ólafur Ragnar Grímsson | Olive Oyl |
| Olympic National Park | Olaf III Guthfrithson | Olaf Cuaran |
| Olive Schreiner | Old Grey Whistle Test | Old Faithful Inn |
