| 9 | Extant Roller Coasters |
| 9 | Defunct Roller Coasters |
| 5 | Extant Amusement Parks |
| 4 | Defunct Amusement Parks |
| 1.89 | Roller Coasters per million people (RCMP) |
| 0.33 | Roller Coasters per 1000 sq mi |
| Location | Roller Coasters | % | Population | RCMP | Area (sq mi) | Density |
|---|---|---|---|---|---|---|
| Waterford | - | - | 116176 | - | 711.936845 | - |
| Galway | - | - | 258058 | - | 2411.837085 | - |
| Wexford | - | - | 149722 | - | 862.731701 | - |
| Dublin | - | - | 1345402 | - | 342.467309 | - |
| Meath | 6 | 0.666667 | 194942 | 30.778385 | 851.276064 | 7.048242 |
| Wicklow | - | - | 142332 | - | 729.305660 | - |
| Donegal | 2 | 0.222222 | 159192 | 12.563445 | 1886.739876 | 1.060030 |
| Carlow | - | - | 56932 | - | 392.773789 | - |
| Cavan | - | - | 76092 | - | 760.042316 | - |
| Clare | - | - | 118817 | - | 1275.958968 | - |
| Cork | 1 | 0.111111 | 542868 | 1.842068 | 2991.317536 | 0.334301 |
| Kerry | - | - | 147707 | - | 1764.040058 | - |
| Kildare | - | - | 222130 | - | 693.727558 | - |
| Kilkenny | - | - | 99232 | - | 781.703052 | - |
| Laois | - | - | 84732 | - | 634.281222 | - |
| Leitrim | - | - | 32044 | - | 592.396050 | - |
| Limerick | - | - | 194899 | - | 1037.991088 | - |
| Longford | - | - | 40810 | - | 427.692409 | - |
| Louth | - | - | 60483 | - | 342.118998 | - |
| Mayo | - | - | 130507 | - | 2170.987216 | - |
| Monaghan | - | - | 60483 | - | 517.165920 | - |
| Offaly | - | - | 78003 | - | 729.061771 | - |
| Roscommon | - | - | 64544 | - | 982.711959 | - |
| Sligo | - | - | 65535 | - | 726.943050 | - |
| Tipperary | - | - | 159553 | - | 1714.874907 | - |
| Westmeath | - | - | 88770 | - | 727.358602 | - |