Ohio : M
- Macedonia (9)
- Madison (8)
- Magnolia (2)
- Maineville (2)
- Malaga (1)
- Malta (1)
- Malvern (1)
- Manchester (3)
- Mansfield (41)
- Mantua (3)
- Maple Heights (4)
- Marengo (2)
- Marietta (15)
- Marion (19)
- Mark Center (1)
- Martins Ferry (1)
- Marysville (13)
- Mason (10)
- Massillon (20)
- Maumee (24)
- Maysville (1)
- Mc Arthur (1)
- Mc Comb (1)
- Mc Connelsville (4)
- Mechanicsburg (2)
- Medina (35)
- Medway (1)
- Mendon (1)
- Mentor (33)
- Miamisburg (7)
- Miamitown (1)
- Middle Point (1)
- Middleburg (2)
- Middlefield (9)
- Middleport (2)
- Middletown (19)
- Midland (2)
- Milan (3)
- Milford (24)
- Millbury (1)
- Milledgeville (1)
- Millersburg (4)
- Mineral Ridge (1)
- Minerva (3)
- Minford (2)
- Mingo Junction (2)
- Minster (3)
- Mogadore (1)
- Monroe (2)
- Monroeville (2)
- Montpelier (5)
- Moraine (1)
- Morristown (1)
- Morrow (1)
- Mount Gilead (2)
- Mount Orab (2)
- Mount Pleasant (2)
- Mount Sterling (2)
- Mount Vernon (8)
- Mount Victory (1)
- MT. GILEAD (1)
- Munroe Falls (2)
- Murray (1)
