Cities of United States starting with letter O Page 28
- Osceola (Tioga County)
- Osceola (Warren County)
- Osceola (Washington County)
- Osceola (White Pine County)
- Osceola Mobile Park
- Osceola Trailer Park
- Osceola Village
- Osco
- Osco (Barbour County)
- Oscoda Mobile Home Park
- Oscura
- Oseuma
- Osgood (Bonneville County)
- Osgood (Lee County, North Carolina)
- Osgood (Mercer County, Pennsylvania)
- Osgood (Monongalia County)
- Osgood (Ness County)
- Osgood (Palo Alto County)
- Osgood Landing
- Oshanter
- Oshawa
- Oshawa (Nicollet County)
- Oshoto
- Oshtemo
- Osier
- Osierfield
- Osiris
- Osiris (Garfield County, Utah)
- Oskaloosa (Barton County, Missouri)
- Oskaloosa (Clay County, Illinois)
- Oskams Corner
- Oskar
- Oskawalik
- Oslin
- Oslo (Dodge County, Minnesota)
- Oslo (Indian River County)
- Oslund
- Osman
- Osman (Manitowoc County)
- Osman (McLean County)
- Osmond (Caswell County)
- Osowaw Junction
- Osprey (Dare County)
- Osprey Beach
- Ospur
- Osro
- Ossahatchie
- Ossawinamakee Beach
- Osseo (Hillsdale County)
- Osseola