- Palermo
- Palmyra
- Paris
- Pembroke
- Perry
- Pittsfield
- Plymouth
- Princeton
- Pittston
- Portland
- Prospect
- Peak Island
- Perch Island
- Pine Island
- Packard Landing
- Packards
- Page Rock
- Paine Corner
- Paines Corner
- Palmer Island
- Papoose Island
- Parent
- Parker Head
- Parker Island
- Parkers
- Parkhurst
- Parkhurst Island
- Parks Island
- Parrot
- Parson Landing