M
| Town and County | Population |
|---|---|
| Macroom Town, Cork | 2985 |
| Maddenstown, Kildare | 179 |
| Malahide, Fingal | 13826 |
| Mallow Town, Cork | 8937 |
| Manorcunningham, Donegal | 320 |
| Manorhamilton, Leitrim | 927 |
| Maynooth, Kildare | 10151 |
| Meathas Truim (or Edgeworthstown), Longford | 726 |
| Meenlaragh, Donegal | 430 |
| Midleton Town, Cork | 7957 |
| Milford, Cork | 204 |
| Milford, Donegal | 793 |
| Millstreet, Cork | 1289 |
| Milltown, Kerry | 332 |
| Milltown, Kildare | 271 |
| Miltown Malbay, Clare | 562 |
| Mitchelstown, Cork | 3300 |
| Moate, Westmeath | 1520 |
| Model Village (or Dripsey), Cork | 295 |
| Mohill, Leitrim | 786 |
| Monaghan Town, Monaghan | 5936 |
| Monasterevan, Kildare | 2583 |
| Moneenroe, Kilkenny | 678 |
| Moneygall, Offaly | 291 |
| Monivea, Galway | 300 |
| Mooncoin, Kilkenny | 854 |
| Moroe, Limerick | 464 |
| Mount Bellew, Galway | 667 |
| Mountcharles, Donegal | 432 |
| Mountcollins, Limerick | 230 |
| Mountmellick, Laois | 3359 |
| Mountrath, Laois | 1331 |
| Moville, Donegal | 1465 |
| Moycullen, Galway | 883 |
| Moylough, Galway | 236 |
| Mucklagh, Offaly | 521 |
| Muff, Donegal | 773 |
| Muinebeag (formerly Bagenalstown), Carlow | 2728 |
| Mullagh, Cavan | 479 |
| Mullaghmore, Sligo | 137 |
| Mullinahone, Tipperary South | 348 |
| Mullinavat, Kilkenny | 309 |
| Mullingar, Westmeath | 15621 |
| Multyfarnham, Westmeath | 153 |
| Mungret, Limerick | 248 |
| Murntown, Wexford | 243 |
Read more about this topic: List Of Towns In The Republic Of Ireland/2002 Census Records