- Parmelee
- Peever
- Philip
- Pascal Island (historical)
- Pascals Island (historical)
- Pickstown
- Pierpont
- Pierre
- Pancake Island
- Peever Flats
- Plum Island
- Plankinton
- Platte
- Pollock
- Porcupine
- Presho
- Pukwana
- Pearsons Corner
- Parade
- Patricia
- Pedro
- Piedmont
- Plainview
- Potato Creek
- Prairie City
- Provo
- Putney
- Plum Island (historical)