| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cashel | city | Donegal | Ireland | 55.25 | -7.20 | 370 | 2031 |
| Cashel | city | Galway | Ireland | 53.62 | -8.62 | 249 | 1379 |
| Cashel | city | Ireland | 52.52 | -7.89 | 830 | 4498 | |
| Cashel | city | Cork | Ireland | 51.62 | -9.08 | 830 | 1750 |
| Cashel | city | Mayo | Ireland | 53.96 | -9.97 | 219 | 1315 |
| Cashel | city | Carlow | Ireland | 52.62 | -6.87 | 324 | 1703 |
| Cashel | city | Donegal | Ireland | 55.13 | -7.87 | 82 | 1081 |
| Cashel | city | Donegal | Ireland | 55.22 | -7.27 | 291 | 2680 |
| Cashel | city | Donegal | Ireland | 54.54 | -8.20 | 275 | 3969 |
| Cashel | city | Donegal | Ireland | 54.74 | -8.42 | 830 | 1000 |
| Cashel | city | Donegal | Ireland | 54.63 | -8.61 | 0 | 1172 |
| Cashel | city | Donegal | Ireland | 54.71 | -8.74 | 830 | 580 |
| Cashel | city | Laois | Ireland | 52.98 | -7.30 | 830 | 7217 |
| Cashel | city | Mayo | Ireland | 53.79 | -9.40 | 403 | 1527 |
| Cashel | city | Mayo | Ireland | 53.96 | -9.08 | 367 | 1926 |
| Cashel | city | Mayo | Ireland | 53.91 | -9.17 | 95 | 1673 |
| Cashel Hill | city | Donegal | Ireland | 55.12 | -8.14 | 239 | 1307 |
| Cashelgarran | city | Sligo | Ireland | 54.36 | -8.52 | 170 | 2693 |
| Cashelisky | city | Cork | Ireland | 51.64 | -8.94 | 249 | 3605 |
| Cashellackan | city | Donegal | Ireland | 54.53 | -8.20 | 249 | 4321 |
| Cashelmore | city | Donegal | Ireland | 55.14 | -7.92 | 3 | 1472 |
| Cashelnagor | city | Donegal | Ireland | 55.08 | -8.10 | 830 | 1223 |
| Casheltown | city | Donegal | Ireland | 54.68 | -8.29 | 190 | 1442 |
| Cashla | city | Galway | Ireland | 53.32 | -8.85 | 101 | 3584 |
| Cashlan | city | Monaghan | Ireland | 54.02 | -6.74 | 324 | 5967 |
| Cashleen | city | Galway | Ireland | 53.60 | -10.03 | 830 | 469 |
| Cashlings Bridge | city | Donegal | Ireland | 54.65 | -8.59 | 249 | 1318 |
| Casino | city | Cork | Ireland | 51.78 | -8.54 | 249 | 3222 |
| Casla | city | Galway | Ireland | 53.29 | -9.55 | 26 | 2349 |
| Cassagh | city | Wexford | Ireland | 52.34 | -6.87 | 206 | 1820 |
| Cassestown | city | Ireland | 52.70 | -7.77 | 357 | 8359 | |
| Casstletowndelvin | city | An Iarmhi | Ireland | 53.61 | -7.09 | 377 | 1545 |
| Castelpollard | city | An Iarmhi | Ireland | 53.67 | -7.30 | 328 | 1915 |
| Castle Cary | city | Donegal | Ireland | 55.17 | -7.10 | 0 | 1103 |
| Castle Mary | city | Ireland | 52.42 | -8.09 | 262 | 1441 | |
| Castle Park | city | Cork | Ireland | 51.70 | -8.52 | 0 | 5192 |
| Castle Roche Cross Roads | city | Lu | Ireland | 54.05 | -6.49 | 183 | 5379 |
| Castle Wrixon | city | Cork | Ireland | 52.30 | -8.64 | 830 | 2269 |
| Castleaffy | city | Mayo | Ireland | 53.83 | -9.60 | 6 | 1022 |
| Castlebaldwin | city | Sligo | Ireland | 54.08 | -8.38 | 262 | 1174 |
| Castlebanny | city | Kilkenny | Ireland | 52.44 | -7.17 | 830 | 1301 |
| Castlebar | city | Mayo | Ireland | 53.85 | -9.30 | 160 | 13196 |
| Castlebellingham | city | Lu | Ireland | 53.90 | -6.39 | 3 | 4415 |
| Castleblagh | city | Cork | Ireland | 52.13 | -8.41 | 830 | 1336 |
| Castleblakeney | city | Galway | Ireland | 53.43 | -8.48 | 249 | 1580 |
| Castleblakeny | city | Galway | Ireland | 53.43 | -8.48 | 249 | 1580 |
| Castleblayney | city | Monaghan | Ireland | 54.12 | -6.73 | 830 | 5204 |
| Castleboy | city | Meath | Ireland | 53.57 | -6.61 | 830 | 2745 |
| Castlebridge | city | Wexford | Ireland | 52.39 | -6.45 | 13 | 8564 |
| Castlecarra | city | Leitrim | Ireland | 53.95 | -8.06 | 239 | 3769 |
| Castlecomer | city | Kilkenny | Ireland | 52.81 | -7.21 | 830 | 3558 |
| Castleconnell | city | Ireland | 52.71 | -8.50 | 180 | 6835 | |
| Castleconor | city | Sligo | Ireland | 54.16 | -9.13 | 9 | 5928 |
| Castlecooke | city | Cork | Ireland | 52.19 | -8.19 | 308 | 1960 |
| Castlecoote | city | Roscommon | Ireland | 53.62 | -8.28 | 236 | 1514 |
| Castlecor | city | Meath | Ireland | 53.77 | -7.20 | 334 | 2324 |
| Castlecor | city | Cork | Ireland | 52.20 | -8.80 | 830 | 1587 |
| Castlecosker | city | Kilkenny | Ireland | 52.47 | -7.16 | 830 | 1518 |
| Castlecreevy | city | Galway | Ireland | 53.39 | -9.02 | 95 | 2970 |
| Castlecutte | city | Laois | Ireland | 53.15 | -7.58 | 830 | 1176 |
| Castledermot | city | Kildare | Ireland | 52.91 | -6.84 | 830 | 2358 |
| Castledermoti nagykeresztek | city | Kildare | Ireland | 52.91 | -6.84 | 830 | 2358 |
| Castledockrell | city | Wexford | Ireland | 52.58 | -6.60 | 226 | 2029 |
| Castledowey | city | Donegal | Ireland | 54.92 | -7.56 | 997 | 2257 |
| Castledown | city | An Iarmhi | Ireland | 53.52 | -7.18 | 830 | 2060 |
| Castleellis | city | Wexford | Ireland | 52.47 | -6.39 | 226 | 2243 |
| Castlefinn | city | Donegal | Ireland | 54.80 | -7.58 | 104 | 3155 |
| Castlefore | city | Leitrim | Ireland | 54.03 | -7.91 | 160 | 1169 |
| Castleforward | city | Donegal | Ireland | 55.00 | -7.48 | 193 | 2394 |
| Castlegal | city | Sligo | Ireland | 54.32 | -8.42 | 830 | 6234 |
| Castlegal | city | Sligo | Ireland | 54.46 | -8.41 | 3 | 1033 |
| Castlegar | city | Galway | Ireland | 53.30 | -9.02 | 6 | 41468 |
| Castlegrace | city | Ireland | 52.29 | -7.95 | 177 | 1209 | |
| Castlegregory | city | Kerry | Ireland | 52.26 | -10.02 | 101 | 1056 |
| Castlehaystown | city | Wexford | Ireland | 52.37 | -6.68 | 249 | 2083 |
| Castlehill | city | Mayo | Ireland | 54.00 | -9.82 | 121 | 208 |
| Castlehill | city | Mayo | Ireland | 54.05 | -9.34 | 78 | 1446 |
| Castleisland | city | Kerry | Ireland | 52.23 | -9.47 | 95 | 4391 |
| Castlejordan | city | Meath | Ireland | 53.40 | -7.13 | 377 | 2019 |
| Castlekeeran | city | Meath | Ireland | 53.73 | -6.96 | 269 | 1858 |
| Castlekelly Cross Roads | city | Kilkenny | Ireland | 52.64 | -7.02 | 104 | 2533 |
| Castleknock | city | Fingal | Ireland | 53.38 | -6.39 | 91 | 120165 |
| Castlelake | city | Ireland | 52.51 | -7.96 | 252 | 2118 | |
| Castlelands | city | Cork | Ireland | 51.55 | -9.26 | 364 | 4270 |
| Castleleiny | city | Ireland | 52.79 | -7.81 | 403 | 3486 | |
| Castlelimon | city | Wicklow | Ireland | 52.91 | -6.08 | 246 | 1747 |
| Castlelyons | city | Cork | Ireland | 52.09 | -8.28 | 226 | 5549 |
| Castlemacadam | city | Wicklow | Ireland | 52.85 | -6.25 | 177 | 1990 |
| Castlemacauliffe Long Bridge | city | Cork | Ireland | 52.19 | -9.03 | 830 | 2376 |
| Castlemagner | city | Cork | Ireland | 52.17 | -8.85 | 311 | 2049 |
| Castlemahon | city | Ireland | 52.43 | -9.01 | 213 | 5465 | |
| Castlemaine | city | Kerry | Ireland | 52.17 | -9.70 | 216 | 2403 |
| Castlemarket Bridge | city | Kilkenny | Ireland | 52.85 | -7.32 | 830 | 2484 |
| Castlemartin | city | Meath | Ireland | 53.68 | -6.78 | 209 | 3382 |
| Castlemartyr | city | Cork | Ireland | 51.91 | -8.05 | 147 | 2725 |
| Castlemitchell South | city | Kildare | Ireland | 52.99 | -7.07 | 269 | 2011 |
| Castlemoyle | city | Galway | Ireland | 53.50 | -8.75 | 298 | 1661 |
| Castlenalact | city | Cork | Ireland | 51.79 | -8.74 | 246 | 5256 |
| Castleore | city | Sligo | Ireland | 54.21 | -8.39 | 259 | 1441 |
| Castleplunket | city | Roscommon | Ireland | 53.75 | -8.33 | 301 | 1014 |
| Castlepole | city | Meath | Ireland | 53.74 | -6.93 | 255 | 6407 |
| Castlepollard | city | An Iarmhi | Ireland | 53.67 | -7.30 | 328 | 1915 |
| Castlequarter | city | Ireland | 52.30 | -8.24 | 387 | 3173 | |
| Castlequarter | city | Ireland | 52.28 | -7.75 | 275 | 1312 | |
| Castlequarter | city | Donegal | Ireland | 55.05 | -7.50 | 3 | 1401 |
| Castlequin | city | Kerry | Ireland | 51.96 | -10.24 | 52 | 1274 |
| Castlequin | city | Kerry | Ireland | 51.98 | -10.23 | 830 | 918 |
| Castlerea | city | Roscommon | Ireland | 53.77 | -8.50 | 246 | 3043 |
| Castlereagh | city | Roscommon | Ireland | 53.77 | -8.50 | 246 | 3043 |
| Castlereban North | city | Kildare | Ireland | 53.03 | -7.07 | 223 | 1645 |
| Castlerichard | city | Ireland | 52.13 | -7.98 | 187 | 2292 | |
| Castleroar | city | Offaly | Ireland | 52.90 | -7.90 | 830 | 1046 |
| Castleroberts | city | Ireland | 52.55 | -8.76 | 88 | 4222 | |
| Castleroe Cross Roads | city | Kildare | Ireland | 52.91 | -6.91 | 236 | 6895 |
| Castlesampson | city | Roscommon | Ireland | 53.41 | -8.12 | 314 | 1199 |
| Castleshane | city | Monaghan | Ireland | 54.24 | -6.88 | 269 | 3090 |
| Castleshannon | city | Kerry | Ireland | 52.43 | -9.79 | 291 | 2154 |
| Castlestrange Bridge | city | Roscommon | Ireland | 53.58 | -8.27 | 226 | 1412 |
| Castletown | city | Cork | Ireland | 51.65 | -9.92 | 0 | 1577 |
| Castletown | city | An Iarmhi | Ireland | 53.45 | -7.48 | 354 | 1197 |
| Castletown | city | Kildare | Ireland | 53.35 | -6.53 | 170 | 35936 |
| Castletown | city | Clare | Ireland | 53.03 | -9.07 | 830 | 338 |
| Castletown | city | Laois | Ireland | 52.98 | -7.49 | 337 | 2746 |
| Castletown | city | Ireland | 52.42 | -8.81 | 830 | 1789 | |
| Castletown | city | Cork | Ireland | 51.77 | -8.96 | 830 | 1658 |
| Castletown | city | Wexford | Ireland | 52.72 | -6.19 | 36 | 1513 |
| Castletown | city | Ireland | 52.72 | -7.70 | 416 | 1339 | |
| Castletown | city | Kilkenny | Ireland | 52.80 | -7.59 | 830 | 2282 |
| Castletown | city | Ireland | 52.88 | -8.38 | 830 | 1319 | |
| Castletown | city | Sligo | Ireland | 54.19 | -8.48 | 193 | 3699 |
| Castletown | city | Offaly | Ireland | 53.07 | -7.84 | 328 | 1638 |
| Castletown | city | Offaly | Ireland | 53.31 | -7.75 | 387 | 1946 |
| Castletown | city | Meath | Ireland | 53.62 | -6.93 | 288 | 3271 |
| Castletown | city | Meath | Ireland | 53.51 | -6.83 | 249 | 2891 |
| Castletown Bearhaven | city | Cork | Ireland | 51.65 | -9.92 | 0 | 1577 |
| Castletown Berehaven | city | Cork | Ireland | 51.65 | -9.92 | 0 | 1577 |
| Castletown Gheoghegan | city | An Iarmhi | Ireland | 53.45 | -7.48 | 354 | 1197 |
| Castletown Kilberry | city | Meath | Ireland | 53.70 | -6.68 | 324 | 13832 |
| Castletown Kinneigh | city | Cork | Ireland | 51.77 | -8.96 | 830 | 1658 |
| Castletown Tara | city | Meath | Ireland | 53.58 | -6.63 | 830 | 3717 |
| Castletownbere | city | Cork | Ireland | 51.65 | -9.92 | 0 | 1577 |
| Castletowndelvin | city | An Iarmhi | Ireland | 53.61 | -7.09 | 380 | 1577 |
| Castletownmoor | city | Meath | Ireland | 53.76 | -6.78 | 223 | 1945 |
| Castletownroche | city | Cork | Ireland | 52.17 | -8.46 | 209 | 1643 |
| Castletownroche | city | Cork | Ireland | 52.15 | -8.50 | 173 | 1400 |
| Castletownsend | city | Cork | Ireland | 51.53 | -9.18 | 0 | 1506 |
| Castletownshend | city | Cork | Ireland | 51.53 | -9.18 | 0 | 1506 |
| Castleventry | city | Cork | Ireland | 51.64 | -9.02 | 830 | 1843 |
| Castlewarren | city | Kilkenny | Ireland | 52.69 | -7.11 | 830 | 1331 |
| Castlewhite | city | Wexford | Ireland | 52.70 | -6.46 | 830 | 2125 |
| Casttercose | city | Kerry | Ireland | 51.79 | -10.05 | 226 | 498 |