- Port Fulton
- Port Mitchell
- Portage
- Porter
- Porter Crossroads
- Portersville
- Portland
- Portland Mills
- Poseyville
- Potato Mound
- Potawatomi Inn
- Potawatomi Park
- Potawatomi Point
- Pottawattamie Park
- Potter Island
- Pottersville
- Poundstone Corner
- Powers
- Powley Corners
- Prairie
- Prairie City
- Prairie Creek
- Prairieton
- Prather
- Prather
- Prattsburg
- Preble
- Prescott
- Preston
- Prince William