- McEwen
- McBee Island
- Macksburg
- Marmot
- Marquam
- Marylhurst
- Milwaukie Heights
- Moores Island
- Mount Pleasant
- Mountain Air Park
- Marsh Island
- Marsh Island Light
- McGregor Island
- Melville
- Miles Crossing
- Miller Sands
- Minaker Island
- Mishawaka
- Mott Island
- Marshland
- Mayger
- McNulty
- Mist
- Mack Arch
- Marial
- Mussel Rock
- McKinley
- Millington
- Millican
- Millwood