- Malibu, California
- Mamaroneck, New York
- Manalapan Township, New Jersey
- Manassas, Virginia
- Manchester, New Hampshire
- Manchester, Tennessee
- Mandeville, Louisiana
- Manhattan Beach, California
- Manhattan, Kansas
- Manitowoc, Wisconsin
- Mansfield, Massachusetts
- Mansfield, Ohio
- Maple Park, Illinois
- Maplewood, New Jersey
- Marco Island, Florida
- Marfa, Texas
- Mariaville, New York
- Marietta, Georgia
- Marina, California
- Marion, Illinois
- Marion, Indiana
- Marlow, Oklahoma
- Marlton, New Jersey
- Mars Hill, North Carolina
- Marshall, Indiana
- Marshall, Texas
- Martha's Vineyard, Massachusetts
- Martin, Tennessee
- Martinsburg, West Virginia
- Martinsville, Virginia
- Maryland Heights, Missouri
- Maryville, Tennessee
- Mashpee, Massachusetts
- Mason, Ohio
- Mathews, North Dakota
- Matthews, North Carolina
- Mattoon, Illinois
- Maui, Hawaii
- Maumee, Ohio
- Maumelle, Arkansas
