- Perkiomen, Pennsylvania, United States1
- Petersburg, Dinwiddie County, Virginia, United States1
- Petersburg, Virginia, United States1
- Philadelphia, Philadelphia County, Pennsylvania, United States2
- Pitch Lake, La Brea, Siparia Regional Corporation, Trinidad, Republic of Trinidad and Tobago1
- Pittsfield, Berkshire County, Massachusetts, United States1
- Plymouth, Massachusetts, United States1
- Redding (Reading), Fairfield County, Connecticut, United States1
- Rhode Island, United States6
- Richland County (S.C.)6
- Richmond, Berkshire County, Massachusetts, United States1
- Richmond, Virginia, United States1
- Riddarhyttan, Vastmanland, Sweden1
- Riechelsdorf, Hessen, Germany2
- Rogers Rock, Lake George, Hague, Warren County, New York, United States1
- Roquefort, Aquitaine, France 1
- Rossie, Saint Lawrence County, New York, United States3
- Rossie, St. Lawrence County, New York, United States1
- Roughton Gill Mine, Cumberland, Cumbria, England, United Kingdom3
- Saint Thomas, U. S. Virgin Islands, United States1