| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
551  | Castleknock  Caislean Cnucha,Caisleán Cnucha,Castleknock,Kaslnok,ka suo nuo,kaslnwk,kassurunokku,kslnak,Каслнок,Ք... | Ireland, Leinster Fingal | populated place population 8,301 | N 53° 22′ 29'' | W 6° 21′ 48'' |
| 552 | Castleisland Castleisland,Oilean Ciarrai,Oileán Ciarraí | Ireland, Munster Co Kerry | populated place population 2,486 | N 52° 14′ 0'' | W 9° 28′ 0'' |
| 553 | Castlecomer Caislean an Chomair,Caisleán an Chomair,Castlecomer,Castlecomer-Donaguile,Kaslkomer,Kaslkomeris,Касл... | Ireland, Leinster County Kilkenny | populated place population 1,502 | N 52° 48′ 22'' | W 7° 12′ 38'' |
| 554 | Castlebridge Castlebridge,Castlebridge-Blackwater,Droichead an Chaisleain,Droichead an Chaisleáin,Kaslbridzas,Kas... | Ireland, Leinster County Wexford | populated place population 1,840 | N 52° 23′ 11'' | W 6° 26′ 58'' |
| 555 | Castleblaney Baile na Lorgan,Castleblaney,Castleblayney,Kaslbleinis,Kaslblejni,kasurubureini,Каслблейни,カースルブレイニー | Ireland, Ulster Monaghan | populated place population 3,607 | N 54° 7′ 0'' | W 6° 44′ 0'' |
| 556 | Castlebellingham Baile an Ghearlanaigh,Baile an Ghearlánaigh,Castle Bellingham,Castlebellingham,Castlebellingham-Kils... | Ireland, Leinster Louth | populated place population 1,126 | N 53° 54′ 3'' | W 6° 23′ 25'' |
| 557 | Cashel Caiseal,Cashel | Ireland, Munster County Tipperary | populated place population 4,422 | N 52° 30′ 57'' | W 7° 53′ 8'' |
| 558 | Carrigtohill Carraig Thuathail,Carrigtohill,Carrigtwohill,Karigtohilis,Karrigtokhill,kyaritohiru,Карригтохилл,کیر... | Ireland, Munster Cork | populated place population 5,080 | N 51° 54′ 30'' | W 8° 15′ 48'' |
| 559 | Carnew Carn an Bhua,Carnew,Carnew Castle,Karn'ju,kanyu,Карнью,カーニュー | Ireland, Leinster County Wicklow | populated place population 1,052 | N 52° 42′ 29'' | W 6° 29′ 40'' |
| 560 | Carndonagh Cardonagh,Carn Domhnach,Carndonagh | Ireland, Ulster Donegal | populated place population 2,471 | N 55° 15′ 0'' | W 7° 16′ 0'' |
| 561 | Carlow Carlow,Ceatharlach | Ireland, Leinster Carlow | seat of a second-order administrative division population 24,272 | N 52° 50′ 27'' | W 6° 55′ 34'' |
| 562 | Carlingford Cairlinn,Carlingford,Karlingford,Карлингфорд | Ireland, Leinster Louth | populated place population 1,445 | N 54° 2′ 24'' | W 6° 11′ 18'' |
| 563 | Callan Callain,Callan | Ireland, Leinster County Kilkenny | populated place population 2,475 | N 52° 32′ 42'' | W 7° 23′ 28'' |
| 564 | Cahersiveen Cahersiveen,Cahersween,Cahirciveen,Cathair Saidhbhin,Cathair Saidhbhín,Kehrsivin,Kersivinas,kaasaibi... | Ireland, Munster Co Kerry | populated place population 1,041 | N 51° 56′ 55'' | W 10° 13′ 20'' |
| 565 | Caherconlish Caherconlish,Cathair Chinn Lis | Ireland, Munster Limerick | populated place population 1,476 | N 52° 35′ 37'' | W 8° 28′ 13'' |
| 566 | Burtonport Ailt An Chorrain,Ailt An Chorráin,Ailt an Chorrain,Ailt an Chorráin,B'ortonport,Barton Port,Bjortonp... | Ireland, Ulster Donegal | populated place population 304 | N 54° 59′ 8'' | W 8° 25′ 52'' |
| 567 | Boyle Bojl,Boyle,Mainistir na Buille,Mainistir na Búille,boili,bwyl,Бойл,بويل,ბოილი | Ireland, Connacht County Roscommon | populated place population 2,568 | N 53° 58′ 0'' | W 8° 18′ 0'' |
| 568 | Blessington Baile Coimin,Baile Coimín,Bledingtonas,Blesingtun,Blessington,blessington,blsyngtwn,bu lai xin dun,b... | Ireland, Leinster County Wicklow | populated place population 5,520 | N 53° 10′ 12'' | W 6° 31′ 57'' |
| 569 | Blarney An Bhlarna,Blarney | Ireland, Munster Cork | populated place population 2,539 | N 51° 56′ 0'' | W 8° 34′ 0'' |
| 570 | Blackrock Na Creagacha Dubha | Ireland, Leinster Louth | populated place population 5,000 | N 53° 57′ 50'' | W 6° 21′ 54'' |
| 571 | Barna Barna,Bearna | Ireland, Connacht Galway | populated place population 1,998 | N 53° 15′ 7'' | W 9° 8′ 59'' |
| 572 | Bangor Baingear,Bangor,Bangor Erris,Bangor-Ehrris,Beannchar Iorrais,bangor-erisi,Бангор-Эррис,ბანგორ-ერისი,... | Ireland, Connacht County Mayo | populated place population 306 | N 54° 8′ 35'' | W 9° 44′ 25'' |
| 573 | Banagher Banagher,Banakher,Beannchar,Банахер | Ireland, Leinster County Offaly | populated place population 1,760 | N 53° 11′ 19'' | W 7° 59′ 12'' |
| 574 | Baltinglass Baltinglas,Baltinglasas,Baltinglass,Bealach Conglais,Балтинглас,Балтингласс | Ireland, Leinster County Wicklow | populated place population 2,137 | N 52° 56′ 14'' | W 6° 42′ 33'' |
| 575 | Balrothery Baile an Ridire,Balroteri,Balrothery,Balrotkherj,Балротери,Балротхерй | Ireland, Leinster Fingal | populated place population 2,017 | N 53° 35′ 17'' | W 6° 11′ 14'' |
| 576 | Ballysadare Baile Easa Dara,Ballysadare | Ireland, Connacht County Sligo | populated place population 1,350 | N 54° 12′ 42'' | W 8° 30′ 34'' |
| 577 | Ballyragget Ballyragget,Beal Atha Ragad,Béal Átha Ragad | Ireland, Leinster County Kilkenny | populated place population 1,082 | N 52° 47′ 20'' | W 7° 19′ 49'' |
| 578 | Ballymote Baile an Mhota,Baile an Mhóta,Ballymote | Ireland, Connacht County Sligo | populated place population 1,549 | N 54° 5′ 0'' | W 8° 31′ 0'' |
| 579 | Ballymahon Baile Ui Mhathain,Baile Uí Mhatháin,Baljmakhon,Ballimakhon,Ballymahon,ba li ma hong,Балймахон,Баллим... | Ireland, Leinster Co Longford | populated place population 1,877 | N 53° 34′ 0'' | W 7° 46′ 0'' |
| 580 | Ballyjamesduff Baile Sheamais Dhuibh,Baile Shéamais Dhuibh,Ballyjamesduff | Ireland, Ulster Cavan | populated place population 2,661 | N 53° 51′ 55'' | W 7° 12′ 10'' |
| 581 | Ballyhaunis Balihonisas,Baljkhaunis,Ballikhonis,Ballyhaunis,Beal Atha hAmhnais,Béal Átha hAmhnais,balihonisi,bar... | Ireland, Connacht County Mayo | populated place population 2,366 | N 53° 46′ 0'' | W 8° 46′ 0'' |
| 582 | Ballygar Baljgar,Balligar,Ballygar,Beal Atha Ghartha,Béal Átha Ghártha,baligari,bariga,Балйгар,Баллигар,ბალიგ... | Ireland, Connacht Galway | populated place population 1,345 | N 53° 31′ 17'' | W 8° 19′ 38'' |
| 583 | Ballyconnell Ballikonnell,Ballyconnell,Beal Atha Conaill,Béal Átha Conaill,Балликоннелл | Ireland, Ulster Cavan | populated place population 1,105 | N 54° 7′ 0'' | W 7° 35′ 0'' |
| 584 | Ballyboden Ballyboden | Ireland, Leinster South Dublin | populated place population 9,611 | N 53° 16′ 50'' | W 6° 18′ 59'' |
| 585 | Ballybay Ballybay,Beal Atha Beithe,Beal Atha na Beithe,Béal Átha Beithe,Béal Átha na Beithe | Ireland, Ulster Monaghan | populated place population 1,329 | N 54° 7′ 34'' | W 6° 54′ 2'' |
| 586 | Ballivor Baile Iomhair,Baile Íomhair,Balivor,Ballivor,bariba,Баливор,バリバー | Ireland, Leinster Meath | populated place population 1,809 | N 53° 31′ 54'' | W 6° 57′ 40'' |
| 587 | Ballina Ballina,Beal an Atha,Béal an Átha | Ireland, Munster County Tipperary | populated place population 2,442 | N 52° 48′ 28'' | W 8° 26′ 8'' |
| 588 | Ballaghaderreen Balagkhaderen,Balahaderinas,Ballaghaderreen,Ballakhaderrin,Bealach an Doirin,Bealach an Doirín,balak... | Ireland, Connacht County Roscommon | populated place population 1,822 | N 53° 54′ 4'' | W 8° 34′ 30'' |
| 589 | Baldoyle Baile Duill,Baile Dúill,Baldojl,Baldojle,Baldoyle,barudoiru,Балдойл,Балдойле,バルドイル | Ireland, Leinster Fingal | populated place population 8,043 | N 53° 23′ 59'' | W 6° 7′ 33'' |
| 590 | Bailieborough Baileborough,Bailieborough,Bailieborougkh,Beiliboras,Bejliboro,Coill an Chollaigh,byylybwrw,Баилиебо... | Ireland, Ulster Cavan | populated place population 2,683 | N 53° 55′ 0'' | W 6° 58′ 0'' |
| 591 | Bagenalstown Bagenalstown,Moneybeg,Muine Bheag,Muinebeag | Ireland, Leinster Carlow | populated place population 2,837 | N 52° 42′ 1'' | W 6° 57′ 42'' |
592  | Lough Awee Loch an Bhui,Loch an Bhuí,Lough Awee,Lough Awheela | Ireland, Connacht Galway | lake | N 53° 22′ 39'' | W 9° 44′ 21'' |
| 593 | Lough Avaghon Avaghon,Avean,Lough Avaghon | Ireland, Ulster Monaghan | lake | N 54° 3′ 48'' | W 6° 57′ 0'' |
| 594 | Aughrim Aughrim,Eachroim | Ireland, Leinster County Wicklow | populated place population 1,442 | N 52° 51′ 12'' | W 6° 19′ 39'' |
| 595 | Athgarvan Athgarvan | Ireland, Leinster Co Kildare | populated place population 1,176 | N 53° 9′ 8'' | W 6° 46′ 54'' |
| 596 | Athboy Atboj,Atbojus,Athboy,Baile Atha Bui,Baile Átha Buí,Атбой | Ireland, Leinster Meath | populated place population 2,397 | N 53° 37′ 23'' | W 6° 54′ 51'' |
| 597 | Askeaton Askeaton,Askiton,Eas Geitine,Eas Géitine,asukiton,Аскеатон,Аскитон,アスキートン | Ireland, Munster Limerick | populated place population 1,137 | N 52° 35′ 59'' | W 8° 58′ 32'' |
| 598 | Ardnacrusha Adnakrusas,Adnakrušas,Ard na Croise,Ardnacrusha,Ardnakrasha,Castlebank,Арднакраша | Ireland, Munster Clare | populated place population 1,414 | N 52° 42′ 32'' | W 8° 36′ 51'' |
| 599 | Lough Aphreaghaun Lough Aphreagan,Lough Aphreaghaun,Loughapreaghan | Ireland, Connacht Galway | lake | N 53° 26′ 0'' | W 9° 30′ 0'' |
| 600 | Aghada Aghada,Aghada-Farsid-Rostellan,Agkhada,Akhada,Ath Fhada Iochtarach,aghada,ajada,aqada,Áth Fhada Íoch... | Ireland, Munster Cork | populated place population 1,030 | N 51° 50′ 21'' | W 8° 12′ 44'' |
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