- Mel-Ray Mobile Home Park
- Melbourne
- Melcher
- Melcher-Dallas
- Melrose
- Meltonville
- Melvin
- Menlo
- Mercer
- Meriden
- Merle Junction
- Merrill
- Merrimac
- Meservey
- Mesquakie Indian Settlement
- Metz
- Meyer
- Miami
- Middle Amana
- Middleburg
- Middletown
- Midland
- Midvale
- Midway
- Midway
- Midway
- Midway Beach
- Midway Trailer Court
- Midwest Country Estates
- Miles