| no. | nom | recensement 2002 | recensement 2006 | calculation 2012 | croissance annuelle | latitude | longitude | division supérieure | d'autres noms |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Abbeyfeale | 1 683 | 1 855 | 2 079 | 1.92 | 52.39°N | 9.30°O | Limerick | Mainistir na Féile |
| 2 | Abbeyleix | 1 383 | 1 491 | 1 605 | 1.24 | 52.90°N | 7.35°O | Laois | |
| 3 | Annacotty | 1 342 | 2 716 | 52.67°N | 8.55°O | Limerick | |||
| 4 | Ardee | 3 948 | 4 717 | 5 743 | 3.33 | 53.86°N | 6.55°O | Louth | Áth Fhirdia, Baile Átha Fhirdhia |
| 5 | Ardnacrusha | 926 | 1 623 | 52.68°N | 8.62°O | Clare | Castlebank | ||
| 6 | Arklow | 9 993 | 11 758 | 14 294 | 3.31 | 52.80°N | 6.15°O | Wicklow | An tInbhear Mór, Ibher Mór |
| 7 | Ashbourne | 6 362 | 8 189 | 11 210 | 5.37 | 53.51°N | 6.40°O | Meath | |
| 8 | Ashford | 1 356 | 1 670 | 53.01°N | 6.11°O | Wicklow | |||
| 9 | Athboy | 1 538 | 1 995 | 2 771 | 5.63 | 53.62°N | 6.92°O | Meath | |
| 10 | Athenry | 2 154 | 2 991 | 4 511 | 7.09 | 53.30°N | 8.76°O | Galway | Áth na Rí |
| 11 | Athlone | 15 936 | 16 759 | 17 386 | 0.61 | 53.42°N | 7.95°O | Westmeath | Áth Luain, Baile Átha Luain |
| 12 | Athy | 6 049 | 7 927 | 10 943 | 5.52 | 52.99°N | 6.99°O | Kildare | Áth, Baile Átha Í |
| 13 | Aughrim | 871 | 1 069 | 1 380 | 4.35 | 52.85°N | 6.33°O | Wicklow | |
| 14 | Bagenalstown | 3 528 | 52.70°N | 6.96°O | Carlow | Muine Bheag, Muinebeag | |||
| 15 | Bailieborough | 1 660 | 1 868 | 2 116 | 2.10 | 53.92°N | 6.98°O | Cavan | |
| 16 | Balbriggan | 10 294 | 11 067 | 12 295 | 1.77 | 53.61°N | 6.19°O | Dublin | Baile Brigín |
| 17 | Ballaghaderreen | 1 416 | 1 674 | 2 024 | 3.21 | 53.91°N | 8.59°O | Roscommon | Bealach an Doirín |
| 18 | Ballina | 1 185 | 1 693 | 2 379 | 5.83 | 54.12°N | 9.16°O | Mayo | Béal an Átha, Beal Ath an Fheadha |
| 19 | Ballinasloe | 6 219 | 6 276 | 6 276 | 0.00 | 53.33°N | 8.24°O | Galway | Béal Átha na Sluagh, Beal Ath an Sluaigheadh, Béal Átha na Sluaighe |
| 20 | Ballinrobe | 1 626 | 2 026 | 2 660 | 4.64 | 53.63°N | 9.23°O | Mayo | Baile an Ródhba, Baile an Róba |
| 21 | Ballivor | 793 | 2 312 | 53.53°N | 6.96°O | Meath | |||
| 22 | Ballybofey | 3 603 | 3 563 | 3 535 | -0.13 | 54.80°N | 7.79°O | Donegal | Bealach Féich, Ballybofey-Stranolar |
| 23 | Ballyhaunis | 1 381 | 1 668 | 2 062 | 3.60 | 53.76°N | 8.77°O | Mayo | Beál Átha hAmhnais |
| 24 | Ballyjamesduff | 871 | 1 393 | 2 476 | 10.06 | 53.87°N | 7.20°O | Cavan | |
| 25 | Ballymote | 981 | 1 190 | 1 477 | 3.67 | 54.08°N | 8.52°O | Sligo | |
| 26 | Ballyshannon | 2 715 | 2 721 | 2 662 | -0.36 | 54.51°N | 8.21°O | Donegal | Béal Átha Seanaigh, Béal Átha Seanaidh |
| 27 | Baltinglass | 1 260 | 1 544 | 1 975 | 4.19 | 52.94°N | 6.71°O | Wicklow | |
| 28 | Banagher | 1 553 | 1 694 | 1 856 | 1.53 | 53.19°N | 7.99°O | Offaly | Beannchar |
| 29 | Bandon | 5 161 | 5 569 | 6 173 | 1.73 | 51.75°N | 8.74°O | Cork | Droichead na Banndan, Droicheadna Bandan |
| 30 | Bantry | 3 150 | 3 309 | 3 473 | 0.81 | 51.66°N | 9.50°O | Cork | Beanntraighe |
| 31 | Belturbet | 1 295 | 1 392 | 1 486 | 1.10 | 54.10°N | 7.45°O | Cavan | Béal Tairbirt |
| 32 | Birr | 4 436 | 5 080 | 5 895 | 2.51 | 53.10°N | 7.92°O | Offaly | Parsontown, Biorra |
| 33 | Blarney | 2 146 | 2 281 | 2 431 | 1.07 | 51.94°N | 8.57°O | Cork | |
| 34 | Blessington | 2 509 | 3 204 | 4 436 | 5.57 | 53.18°N | 6.53°O | Wicklow | |
| 35 | Boyle | 2 205 | 2 392 | 2 574 | 1.23 | 53.98°N | 8.32°O | Roscommon | Mainistirna Búille |
| 36 | Bray | 30 951 | 31 851 | 32 819 | 0.50 | 53.21°N | 6.11°O | Wicklow | Bré, Bri Chualann |
| 37 | Bunbeg-Derrybeg | 1 388 | 1 430 | 55.08°N | 8.29°O | Donegal | Derrybeg | ||
| 38 | Bunclody-Carrickduff | 1 361 | 1 627 | Carlow | Carrickduff | ||||
| 39 | Buncrana | 5 271 | 5 712 | 6 298 | 1.64 | 55.14°N | 7.45°O | Donegal | Bun Crannaighe, Bun Cranncha |
| 40 | Bundoran | 1 842 | 1 903 | 1 950 | 0.41 | 54.48°N | 8.29°O | Donegal | Bun Dobhráin |
| 41 | Cahir | 2 794 | 3 145 | 3 672 | 2.62 | 52.37°N | 7.92°O | Tipperary South Riding | Caher, Cathair Dún Iascaigh |
| 42 | Callan | 1 325 | 1 351 | 1 362 | 0.14 | 52.55°N | 7.39°O | Kilkenny | |
| 43 | Carlow | 18 487 | 19 367 | 20 581 | 1.02 | 52.84°N | 6.92°O | Carlow | Ceatharlach |
| 44 | Carndonagh | 1 673 | 1 820 | 1 986 | 1.47 | 55.25°N | 7.27°O | Donegal | |
| 45 | Carraroe | 629 | 1 347 | 53.27°N | 9.58°O | Galway | |||
| 46 | Carrickmacross | 3 832 | 4 215 | 4 725 | 1.92 | 53.98°N | 6.74°O | Monaghan | Carraig Mhachaíre Rois |
| 47 | Carrick-on-Shannon | 2 237 | 2 929 | 4 007 | 5.36 | 53.95°N | 8.10°O | Leitrim | Cara Droma Rúisc, Cara Droma Rúisg |
| 48 | Carrick-on-Suir | 5 586 | 5 907 | 6 242 | 0.92 | 52.35°N | 7.42°O | Tipperary South Riding | Carraig na Siúire |
| 49 | Carrigaline | 11 191 | 12 773 | 15 493 | 3.27 | 51.81°N | 8.39°O | Cork | |
| 50 | Carrigtwohill | 1 411 | 1 959 | 2 939 | 6.99 | 51.91°N | 8.26°O | Cork | Carrigtohill |
| 51 | Cashel | 2 770 | 2 851 | 2 905 | 0.31 | 52.52°N | 7.89°O | Tipperary South Riding | Caiseal |
| 52 | Castlebar | 11 371 | 11 801 | 12 726 | 1.27 | 53.86°N | 9.30°O | Mayo | Caisleán a'Bharraigh, Caisléan an Barraigh, Caislean an Bharraigh |
| 53 | Castleblayney | 2 936 | 3 010 | 3 067 | 0.31 | 54.12°N | 6.75°O | Monaghan | Baile na Lorgan |
| 54 | Castlebridge | 1 013 | 1 670 | 52.39°N | 6.45°O | Wexford | |||
| 55 | Castlecomer | 1 482 | 1 541 | 1 592 | 0.54 | 52.80°N | 7.22°O | Kilkenny | Castlecomer-Donaguile, Donaguile |
| 56 | Castleisland | 2 162 | 2 260 | 2 319 | 0.43 | 52.24°N | 9.47°O | Kerry | Oileán Ciarraighe, Oileán Ciarral |
| 57 | Castlerea | 1 788 | 1 890 | 1 961 | 0.62 | 53.77°N | 8.51°O | Roscommon | An Caisleán Riabhach, Castlereagh |
| 58 | Cavan | 6 098 | 7 362 | 9 165 | 3.72 | 54.00°N | 7.37°O | Cavan | An Cabhán, Cabhán |
| 59 | Celbridge | 16 016 | 16 527 | 17 767 | 1.21 | 53.33°N | 6.55°O | Kildare | |
| 60 | Charleville | 2 685 | 3 000 | 3 344 | 1.83 | 52.35°N | 8.68°O | Cork | Ráthluirc, An Ráth, Ráth Loirc, Rathluirc |
| 61 | Clane | 4 417 | 5 195 | 6 550 | 3.94 | 53.29°N | 6.69°O | Kildare | |
| 62 | Clara | 2 704 | 3 006 | 3 365 | 1.90 | 53.33°N | 7.62°O | Offaly | Clóirtheach, Clárach |
| 63 | Claremorris | 2 101 | 2 481 | 2 995 | 3.19 | 53.73°N | 9.01°O | Mayo | Clár Chlainne Mhuiris |
| 64 | Clifden | 1 355 | 1 484 | 1 716 | 2.45 | 53.48°N | 10.02°O | Galway | |
| 65 | Clogherhead | 906 | 1 244 | 1 842 | 6.76 | 53.79°N | 6.24°O | Louth | |
| 66 | Clonakilty | 3 698 | 4 090 | 4 687 | 2.30 | 51.62°N | 8.89°O | Cork | Cloich na Coillte, Cloch na gCoillte |
| 67 | Clones | 1 947 | 1 752 | 1 495 | -2.61 | 54.19°N | 7.24°O | Monaghan | Cluain Eois |
| 68 | Clonmel | 16 910 | 16 944 | 16 852 | -0.09 | 52.36°N | 7.71°O | Tipperary South Riding | Cluain Meala |
| 69 | Cloyne | 785 | 998 | 1 344 | 5.09 | 51.86°N | 8.12°O | Cork | |
| 70 | Cobh | 9 811 | 10 719 | 11 999 | 1.90 | 51.86°N | 8.30°O | Cork | An Cóf, An Cóbh, Cove of Cork, Queenstown |
| 71 | Cootehill | 1 744 | 1 700 | 1 601 | -1.00 | 54.07°N | 7.09°O | Cavan | Coothill, An Mhuinchille, Muinchille |
| 72 | Cork | 186 239 | 191 131 | 194 184 | 0.26 | 51.90°N | 8.47°O | Cork | Corcaigh |
| 73 | Crosshaven | 1 373 | 1 546 | 51.80°N | 8.30°O | Cork | |||
| 74 | Derrinturn | 791 | 1 427 | 53.34°N | 6.94°O | Kildare | |||
| 75 | Dingle | 1 828 | 1 967 | 2 169 | 1.64 | 52.13°N | 10.25°O | Kerry | Daingean Uí Chúis, An Daingean |
| 76 | Donabate | 3 854 | 4 799 | 6 554 | 5.33 | 53.48°N | 6.15°O | Dublin | |
| 77 | Donegal | 2 453 | 2 474 | 2 472 | -0.01 | 54.66°N | 8.12°O | Donegal | Dún na nGall, Tír Chonaill |
| 78 | Drogheda | 31 020 | 31 634 | 32 695 | 0.55 | 53.72°N | 6.36°O | Louth | Droichead Átha |
| 79 | Dublin | 1 004 614 | 1 044 726 | 1 079 402 | 0.55 | 53.33°N | 6.25°O | Dublin | Baile Atha Cliath, Duibhlinn, Eblana, Dulyn |
| 80 | Duleek | 2 173 | 3 221 | 5 250 | 8.48 | 53.65°N | 6.42°O | Meath | |
| 81 | Dunboyne | 5 363 | 6 009 | 7 256 | 3.19 | 53.40°N | 6.47°O | Meath | |
| 82 | Dundalk | 32 505 | 34 650 | 37 046 | 1.12 | 54.02°N | 6.42°O | Louth | Dún Dealgan |
| 83 | Dungarvan | 7 452 | 8 116 | 8 856 | 1.46 | 52.09°N | 7.63°O | Waterford | Dún Garbháin |
| 84 | Dunleer | 1 014 | 1 328 | 1 818 | 5.37 | 53.84°N | 6.40°O | Louth | |
| 85 | Dunmanway | 1 532 | 1 583 | 1 624 | 0.43 | 51.72°N | 9.12°O | Cork | Dún Maomhuighe, Dún Mánmhaí |
| 86 | Dunmore East | 1 750 | 2 458 | 52.15°N | 7.00°O | Waterford | |||
| 87 | Dunshaughlin | 3 063 | 3 258 | 3 577 | 1.57 | 53.51°N | 6.54°O | Meath | |
| 88 | Edenderry | 4 559 | 5 733 | 7 537 | 4.67 | 53.34°N | 7.05°O | Offaly | Éadan Doire |
| 89 | Enfield | 1 072 | 3 111 | 53.42°N | 6.84°O | Meath | |||
| 90 | Ennis | 22 051 | 24 377 | 28 127 | 2.41 | 52.86°N | 8.99°O | Clare | Inis |
| 91 | Enniscorthy | 8 964 | 9 289 | 9 819 | 0.93 | 52.50°N | 6.57°O | Wexford | Inis Coirthe, Inis Córthaidh |
| 92 | Enniskerry | 1 904 | 1 816 | 1 775 | -0.38 | 53.19°N | 6.17°O | Wicklow | |
| 93 | Fermoy | 4 804 | 5 759 | 7 118 | 3.59 | 52.13°N | 8.28°O | Cork | |
| 94 | Galway | 65 832 | 71 983 | 80 695 | 1.92 | 53.28°N | 9.06°O | Galway | Gaillimh, An Ghaillimh |
| 95 | Gorey | 5 282 | 6 836 | 9 569 | 5.77 | 52.67°N | 6.30°O | Wexford | Guaire |
| 96 | Gort | 1 776 | 2 722 | 4 664 | 9.39 | 53.07°N | 8.82°O | Galway | An Gort |
| 97 | Greystones | 11 913 | 11 573 | 11 096 | -0.70 | 53.14°N | 6.07°O | Wicklow | An Chloch Líath, Na Clocha Liatha, Greystones-Delgany |
| 98 | Kanturk | 1 651 | 1 724 | 1 766 | 0.40 | 52.17°N | 8.90°O | Cork | Ceann Toirc |
| 99 | Kenmare | 1 844 | 1 695 | 1 579 | -1.17 | 51.88°N | 9.59°O | Kerry | Neidín |
| 100 | Kilcock | 2 740 | 3 979 | 6 581 | 8.75 | 53.40°N | 6.67°O | Kildare | |
| 101 | Kilcoole | 2 826 | 4 765 | 8 944 | 11.07 | 53.10°N | 6.07°O | Wicklow | |
| 102 | Kilcullen | 1 483 | 2 514 | 4 709 | 11.03 | 53.12°N | 6.74°O | Kildare | |
| 103 | Kildare | 5 694 | 7 283 | 9 987 | 5.40 | 53.16°N | 6.99°O | Kildare | Cill Dara |
| 104 | Kilkee | 1 260 | 1 328 | 1 373 | 0.56 | 52.68°N | 9.64°O | Clare | |
| 105 | Kilkenny | 20 735 | 22 383 | 24 325 | 1.40 | 52.66°N | 7.26°O | Kilkenny | Cill Chainnigh, Cill Choinnigh |
| 106 | Kill | 2 805 | 3 675 | Waterford | |||||
| 107 | Killarney | 13 137 | 14 558 | 16 485 | 2.09 | Kerry | Cill Áirne | ||
| 108 | Killorglin | 1 359 | 1 461 | 1 573 | 1.24 | 52.10°N | 9.79°O | Kerry | |
| 109 | Kilmallock | 1 362 | 1 412 | 1 462 | 0.58 | 52.40°N | 8.59°O | Limerick | |
| 110 | Kilrush | 2 699 | 2 630 | 2 505 | -0.81 | 52.63°N | 9.49°O | Clare | Cill Ruis |
| 111 | Kingscourt | 1 307 | 1 666 | 2 209 | 4.81 | 53.91°N | 6.81°O | Cavan | |
| 112 | Kinnegad | 1 296 | 3 095 | 53.45°N | 7.10°O | Westmeath | |||
| 113 | Kinsale | 3 554 | 3 917 | 4 457 | 2.18 | 51.70°N | 8.53°O | Cork | Cionn tSáile, Ceann Sáile |
| 114 | Kinsealy-Drinan | 2 110 | 3 322 | 5 714 | 9.46 | 53.42°N | 6.19°O | Dublin | |
| 115 | Laytown | 5 597 | 8 930 | 16 065 | 10.28 | 53.67°N | 6.24°O | Meath | Laytown-Bettystown-Mornington |
| 116 | Leixlip | 15 016 | 14 689 | 14 308 | -0.44 | 53.37°N | 6.49°O | Dublin | Leim an Bhradáin, Salmon Leip |
| 117 | Letterkenny | 15 231 | 16 567 | 18 833 | 2.16 | 54.94°N | 7.74°O | Donegal | Leitir Ceanainn, Leitir Ceannainn |
| 118 | Lifford | 1 395 | 1 635 | 54.84°N | 7.49°O | Donegal | Leifear, Leithbhear | ||
| 119 | Limerick | 32 975 | 37 211 | 40 169 | 1.28 | 52.67°N | 8.63°O | Limerick | Luimneach |
| 120 | Listowel | 3 999 | 4 352 | 4 783 | 1.59 | 52.45°N | 9.49°O | Kerry | Lios Tuathail |
| 121 | Longford | 7 557 | 8 560 | 9 791 | 2.26 | 53.73°N | 7.81°O | Longford | Longphort, Longphuirt, An Longfort |
| 122 | Longwood | 480 | 1 481 | 53.45°N | 6.92°O | Meath | |||
| 123 | Loughrea | 4 004 | 4 527 | 5 267 | 2.56 | 53.20°N | 8.57°O | Galway | Baile Locha Riach |
| 124 | Lusk | 2 456 | 4 171 | 8 012 | 11.49 | 53.52°N | 6.17°O | Dublin | |
| 125 | Macroom | 2 985 | 3 578 | 4 446 | 3.69 | 51.90°N | 8.95°O | Cork | Maigh Chromtha |
| 126 | Malahide | 13 826 | 14 911 | 16 134 | 1.32 | 53.45°N | 6.16°O | Dublin | Mullach Íde |
| 127 | Mallow | 8 937 | 10 163 | 11 881 | 2.64 | 52.14°N | 8.66°O | Cork | Mala, Malla |
| 128 | Maynooth | 10 151 | 10 750 | 11 851 | 1.64 | 53.38°N | 6.60°O | Kildare | |
| 129 | Meathas Truim | 726 | 1 020 | 1 503 | 6.67 | 53.70°N | 7.62°O | Longford | Edgeworthstown |
| 130 | Midleton | 7 957 | 9 627 | 12 352 | 4.24 | 51.92°N | 8.17°O | Cork | Mainistir na Corann |
| 131 | Millstreet | 1 289 | 1 462 | Cork | |||||
| 132 | Mitchelstown | 3 300 | 3 436 | 3 554 | 0.56 | 52.27°N | 8.27°O | Cork | Baile Mhistéala |
| 133 | Moate | 1 520 | 1 861 | 2 308 | 3.65 | 53.56°N | 7.72°O | Longford | |
| 134 | Monaghan | 5 936 | 6 516 | 7 115 | 1.48 | 54.25°N | 6.97°O | Monaghan | Muineachán, Monoghan |
| 135 | Monasterevan | 2 583 | 2 989 | 3 554 | 2.93 | 53.14°N | 7.06°O | Kildare | Monasterevin |
| 136 | Mountmellick | 3 361 | 4 003 | 4 909 | 3.46 | 53.12°N | 7.33°O | Laois | Móinteach Mílic |
| 137 | Moycullen | 883 | 1 119 | 1 552 | 5.60 | 53.34°N | 9.20°O | Galway | |
| 138 | Muff | 773 | 1 659 | 55.07°N | 7.27°O | Donegal | |||
| 139 | Muinebeag | 2 728 | 2 736 | 2 673 | -0.39 | 52.70°N | 6.95°O | Carlow | |
| 140 | Mullingar | 15 621 | 18 235 | 22 344 | 3.44 | 53.53°N | 7.34°O | Westmeath | An Muileann gCearr, An Muileann Cearr |
| 141 | Naas | 18 288 | 20 003 | 22 917 | 2.29 | 53.22°N | 6.68°O | Kildare | An Nás, Nás na Rí |
| 142 | Navan | 19 417 | 24 352 | 35 611 | 6.54 | 53.66°N | 6.69°O | Meath | An Uaimh |
| 143 | Nenagh | 6 454 | 7 774 | 9 584 | 3.55 | 52.87°N | 8.20°O | Tipperary North Riding | An tAonach, An Aonach, Aonach Urmhumham |
| 144 | Newbridge | 16 739 | 18 856 | 22 474 | 2.97 | 53.18°N | 6.80°O | Kildare | An Droichead Nua, Droichead Nua |
| 145 | Newport | 887 | 1 143 | 1 528 | 4.96 | 52.71°N | 8.41°O | Tipperary North Riding | |
| 146 | New Ross | 6 537 | 6 680 | 6 772 | 0.23 | 52.40°N | 6.95°O | Wexford | Ros Mhic Thriúin, Ros Mic Treóin |
| 147 | Newtownmountkennedy | 2 521 | 2 585 | 53.09°N | 6.11°O | Wicklow | |||
| 148 | Oldcastle | 937 | 1 123 | 1 382 | 3.52 | 53.77°N | 7.16°O | Meath | |
| 149 | Oranmore | 1 692 | 2 267 | 3 270 | 6.30 | 53.27°N | 8.93°O | Galway | |
| 150 | Oughterard | 1 209 | 1 299 | 1 487 | 2.28 | 53.42°N | 9.33°O | Galway | |
| 151 | Passage West | 4 595 | 6 159 | 51.87°N | 8.34°O | Cork | An Pasáiste | ||
| 152 | Portarlington | 4 001 | 5 797 | 8 954 | 7.51 | 53.16°N | 7.19°O | Laois | Cúil an tSúdaire |
| 153 | Portlaoighise | 12 127 | 13 919 | 16 933 | 3.32 | 53.04°N | 7.30°O | Laois | Queenstown, Port Laoise, Maryborough, Port Laoighse, Portlaoise, Port Laoighise |
| 154 | Portlaw | 1 183 | 1 524 | 2 047 | 5.04 | 52.29°N | 7.32°O | Waterford | |
| 155 | Portmarnock | 8 376 | 7 942 | 7 200 | -1.62 | 53.42°N | 6.14°O | Dublin | |
| 156 | Portrane | 1 726 | 1 470 | 53.49°N | 6.11°O | Dublin | Portraine | ||
| 157 | Portumna | 1 235 | 1 296 | 1 386 | 1.13 | 53.09°N | 8.22°O | Galway | |
| 158 | Prosperous | 1 523 | 3 810 | 53.29°N | 6.75°O | Kildare | |||
| 159 | Rathangan | 1 811 | 1 776 | 1 805 | 0.27 | 53.22°N | 6.99°O | Kildare | |
| 160 | Rathcoole | 2 499 | 2 822 | 3 130 | 1.74 | 53.27°N | 6.47°O | Dublin | |
| 161 | Rathcormac | 429 | 727 | 1 343 | 10.77 | 52.08°N | 8.28°O | Cork | Rathcormack |
| 162 | Rathdrum | 1 387 | 1 460 | 1 545 | 0.95 | 52.93°N | 6.23°O | Wicklow | |
| 163 | Rathkeale | 1 362 | 1 438 | 1 466 | 0.32 | 52.52°N | 8.94°O | Limerick | Ráth Caola |
| 164 | Rathnew | 1 441 | 1 492 | 52.99°N | 6.09°O | Wicklow | |||
| 165 | Ratoath | 3 794 | 5 866 | 10 596 | 10.36 | 53.50°N | 6.45°O | Meath | |
| 166 | Rhode | 705 | 1 372 | 53.35°N | 7.20°O | Offaly | |||
| 167 | Rochfortbridge | 1 382 | 3 060 | 53.41°N | 7.30°O | Westmeath | |||
| 168 | Roscommon | 4 489 | 4 931 | 5 613 | 2.18 | 53.64°N | 8.20°O | Roscommon | Ros Comáin |
| 169 | Roscrea | 4 578 | 4 911 | 5 281 | 1.22 | 52.96°N | 7.81°O | Tipperary North Riding | Ros Cré |
| 170 | Rosslare | 1 145 | 1 303 | 1 531 | 2.72 | 52.28°N | 6.38°O | Wexford | |
| 171 | Rush | 6 769 | 8 293 | 10 737 | 4.40 | 53.52°N | 6.11°O | Dublin | An Ros |
| 172 | Saggart | 588 | 989 | 1 877 | 11.27 | 53.28°N | 6.44°O | Dublin | |
| 173 | Sallins | 2 922 | 4 411 | 7 680 | 9.68 | 53.25°N | 6.67°O | Kildare | |
| 174 | Shannon | 8 561 | 9 239 | 10 019 | 1.36 | 52.70°N | 8.92°O | Clare | Sionna, An tSionainn |
| 175 | Sixmilebridge | 1 327 | 1 535 | 1 839 | 3.06 | 52.74°N | 8.77°O | Clare | |
| 176 | Skerries | 9 149 | 9 822 | 10 853 | 1.68 | 53.58°N | 6.11°O | Dublin | Na Sceirí, Sceirí |
| 177 | Skibbereen | 2 000 | 2 332 | 2 770 | 2.91 | 51.56°N | 9.28°O | Cork | An Sciobairín |
| 178 | Sligo | 19 735 | 19 278 | 18 539 | -0.65 | 54.28°N | 8.48°O | Sligo | Sligeach |
| 179 | Stamullen | 779 | 1 278 | 2 445 | 11.42 | 53.63°N | 6.27°O | Meath | Stamullin |
| 180 | Strandhill | 1 002 | 1 580 | 54.27°N | 8.59°O | Sligo | |||
| 181 | Swinford | 1 497 | 1 472 | 1 435 | -0.42 | 53.95°N | 8.96°O | Mayo | |
| 182 | Swords | 27 175 | 33 699 | 44 241 | 4.64 | 53.45°N | 6.22°O | Dublin | Sord |
| 183 | Templemore | 2 270 | 2 371 | 2 440 | 0.48 | 52.79°N | 7.84°O | Tipperary North Riding | Teampall Mór |
| 184 | Thomastown | 1 600 | 1 799 | 2 025 | 1.99 | 52.52°N | 7.14°O | Kilkenny | Baile Mhic Anndáin |
| 185 | Thurles | 7 425 | 7 733 | 8 005 | 0.58 | 52.69°N | 7.83°O | Tipperary North Riding | Dúrlas Eile, Durlas |
| 186 | Tipperary | 4 964 | 4 844 | 4 617 | -0.80 | 52.49°N | 8.17°O | Tipperary South Riding | Tiobraid Árann, Tiobrad Aránn |
| 187 | Tower | 3 032 | 6 406 | 51.92°N | 8.60°O | Cork | |||
| 188 | Tralee | 21 987 | 22 556 | 23 211 | 0.48 | 52.28°N | 9.72°O | Kerry | Trá Lí, Tráighlí, Traigh Lí |
| 189 | Tramore | 8 305 | 9 511 | 11 371 | 3.02 | 52.16°N | 7.16°O | Waterford | Tráigh Mhór |
| 190 | Trim | 5 894 | 6 902 | 8 640 | 3.81 | 53.55°N | 6.80°O | Meath | Áth Troim, Ath Truim, Baile Átha Troim |
| 191 | Tuam | 5 947 | 6 685 | 7 628 | 2.22 | 53.52°N | 8.86°O | Galway | Tuaim |
| 192 | Tubbercurry | 1 171 | 1 346 | 1 582 | 2.73 | 54.05°N | 8.73°O | Sligo | Tobercurry |
| 193 | Tullamore | 11 098 | 12 718 | 14 859 | 2.63 | 53.28°N | 7.49°O | Offaly | An Tulach Mhór, Tulach Mhór |
| 194 | Tullow | 2 417 | 2 800 | 3 269 | 2.61 | 52.80°N | 6.74°O | Carlow | An Tullach, Tullach Ua, Tullach Ua bhFeidhlimidh |
| 195 | Virginia | 1 093 | 1 470 | 2 148 | 6.53 | 53.83°N | 7.08°O | Cavan | |
| 196 | Waterford | 46 736 | 48 239 | 49 710 | 0.50 | 52.26°N | 7.13°O | Waterford | Port Láirge |
| 197 | Westport | 5 634 | 5 489 | 5 432 | -0.17 | 53.81°N | 9.52°O | Mayo | Cathair na Mart |
| 198 | Wexford | 17 235 | 17 957 | 18 509 | 0.51 | 52.34°N | 6.48°O | Wexford | Loch Garman |
| 199 | Wicklow | 9 355 | 9 792 | 10 612 | 1.35 | 52.99°N | 6.05°O | Wicklow | Cill Mhanntáin, Cill Maintain, Cill Mantáin |
| 200 | Youghal | 6 597 | 6 801 | 7 020 | 0.53 | 51.95°N | 7.85°O | Cork | Eóchaill |
