Cities of United States starting with letter O Page 57
- Old Kane
- Old Kasaan
- Old Kaskaskia
- Old Kent
- Old Kingston
- Old Kotzebue
- Old La Sal
- Old Landing
- Old Landing (Lee County, Kentucky)
- Old Landing (Sussex County)
- Old Landing Woods
- Old Lapile
- Old Lawton
- Old Lebanon
- Old Leupp
- Old Lexington
- Old Liberty
- Old Limber Pine
- Old Line Village of Fair Hill
- Old Linn Creek
- Old Lombard
- Old London
- Old Longbotbam Place
- Old Lyme
- Old Lyme Shores
- Old Madison
- Old Mammoth
- Old Manor
- Old Marco Junction
- Old Marissa
- Old Martin Mill Place
- Old Mastic
- Old Maylene
- Old McGrath
- Old McKeal Place
- Old Merritt
- Old Mesaba
- Old Middleton
- Old Milan
- Old Mill
- Old Mill (Bedford County)
- Old Mill (Davidson County, North Carolina)
- Old Mill Acres
- Old Mill Bottom Estates
- Old Mill Chase
- Old Mill Estates
- Old Mill Estates (Greenville County)
- Old Mill Farms
- Old Mill Forest
- Old Mill Gardens