Cities/towns in Washington, Pennsylvania

• Avella (3 historic properties)
• Bentleyville (1 historic property)
• Blainsburg (1 historic property)
• Buffalo Twp. (1 historic property)
• Burgettstown (1 historic property)
• California (4 historic properties)
• Canonsburg (4 historic properties)
• Cecil (1 historic property)
• Centerville (2 historic properties)
• Charleroi (2 historic properties)
• Charleroi Borough (2 historic properties)
• Chartiers Township (1 historic property)
• Claysville (4 historic properties)
• Cokeburg (2 historic properties)
• Courtney (1 historic property)
• Deemston (1 historic property)
• Donora (2 historic properties)
• East Washington (1 historic property)
• Eighty-Four (2 historic properties)
• Ellsworth (1 historic property)
• Fallowfield (1 historic property)
• Fredericktown (1 historic property)
• Gastonville (1 historic property)
• Ginger Hill (1 historic property)
• Glyde (1 historic property)

• Laboratory (1 historic property)
• Marianna (3 historic properties)
• Midway (1 historic property)
• Monongahela (2 historic properties)
• Monongahela City (3 historic properties)
• Morris Township (1 historic property)
• North Bethlehem (1 historic property)
• North Bethlehem Township (1 historic property)
• North Fredericktown (1 historic property)
• Paris (2 historic properties)
• Peters Township (1 historic property)
• Prosperity (3 historic properties)
• Raccoon (1 historic property)
• Richeyville (1 historic property)
• Scenery Hill (3 historic properties)
• South Strabane Twp. (1 historic property)
• Studa (1 historic property)
• Taylorstown (2 historic properties)
• Washington (13 historic properties)
• West Alexander (1 historic property)
• West Alexander Borough (1 historic property)
• West Brownsville (1 historic property)
• West Finley (7 historic properties)
• West Middletown Borough (1 historic property)