- Middletown, Delaware
- Middletown, Rhode Island
- Midland, Texas
- Midlothian, Texas
- Midlothian, Virginia
- Midvale, Utah
- Milledgeville, Georgia
- Millersburg, Ohio
- Millersville, Maryland
- Millington, Tennessee
- Milton, Florida
- Milton, Georgia
- Milwaukee, Wisconsin
- Minden, Nevada
- Minneapolis, Minnesota
- Miramar Beach, Florida
- Mission Viejo, California
- Missouri City, Texas
- Mobile, Alabama
- Monett, Missouri
- Monmouth, Oregon
- Monroe, Georgia
- Monroe, Louisiana
- Monroe, North Carolina
- Mont Belvieu, Texas
- Mont-Tremblant, Quebec
- Montecito, California
- Monterey, California
- Montevallo, Alabama
- Montgomery, Alabama
- Montgomery, Ohio
- Montgomery, Texas
- Monticello, Indiana
- Monticello, New York
- Montreal, Quebec
- Montreat, North Carolina
- Moon Township, Pennsylvania
- Mooresville, Indiana
- Mooresville, North Carolina
- Moorhead, Minnesota
