Wet Basement
- Manley
- Marco
- Marengo
- Mariah Hill
- Marion
- Markleville
- Mars Hill
- Martinsville
- Martz
- Matthews
- Mauckport
- Maxwell
- Mays
- Maysville
- Maywood
- Mc Cordsville
- Mccordsville
- Mcnatts
- Meadowood Est
- Meadowood Estates
- Medford
- Medora
- Mentor
- Messick
- Mexico
- Miami
- Michigantown
- Middletown
- Midland
- Mill Grove
- Millhousen
- Milltown
- Millville
- Milroy
- Mineral
- Mitchell
- Monkey Island
- Monon
- Monroe City
- Monrovia
- Montgomery
- Monticello
- Montmorenci
- Montpelier
- Mooreland
- Mooresville
- Moravia
- Morgantown
- Morristown
- Morton