- Picayune Island
- Pierceburg
- Pierron
- Pierson
- Pike
- Pike Township
- Pinckneyville
- Pine Grove
- Pine Grove
- Pine Hills Estates
- Pine Island
- Pine Meadow Estates
- Pine Needle
- Pine View
- Pinehurst Manor
- Pineview Hills
- Pingree Grove
- Pinkstaff
- Pioneer
- Piopolis
- Piper City
- Pisgah
- Pistakee
- Pistakee Highlands
- Pitchin
- Pittsburg
- Pittsburg
- Pittsfield
- Pittwood
- Plainfield