Cities — M
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- Macroom (M)
- Malahide (L)
- Mallow (M)
- Manorhamilton (C)
- Marino (L)
- Maynooth (L)
- Midleton (M)
- Millstreet (M)
- Milltown (L)
- Mitchelstown (M)
- Moate (L)
- Moate (L)
- Monaghan (U)
- Monasterevin (L)
- Monkstown (L)
- Mooncoin (L)
- Moone (L)
- Moroe (M)
- Mount Merrion (L)
- Mountmellick (L)
- Mountrath (L)
- Moville (U)
- Moycullen (C)
- Moyross (M)
- Muff (U)
- Mulhuddart (L)
- Mullagh (U)