- Norwich, New London County, Connecticut, United States1
- Nova Scotia, Canada4
- Oban, Argyll and Bute, Scotland, United Kingdom1
- Ogdensburg, Franklin Mining District, Sussex County, New Jersey, United States1
- Onondaga County, New York, United States1
- Orange County, New York, United States3
- Pasco province, Pasco Department, Peru1
- Passamaquoddy Bay, Maine, United States1
- Pennsylvania, United States6
- Perkiomen Mines, Perkiomen, Montgomery County, Pennsylvania, United States1
- Perkiomen, Montgomery County, Pennsylvania1
- Perkiomen, Montgomery County, Pennsylvania, United States7
- 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