| CARROWREAGH | An Cheathrú Riabhach | 99.9 | | 2 |
| CARROWREAGH | An Cheathrú Riabhach | 60.5 | | 8 |
| CARROWREAGH | An Cheathrú Riabhach | 167.3 | | 1 |
| CARROWREAGH EAST | An Cheathrú Riabhach Thoir | 302.4 | 2 | 11 |
| CARROWREAGH WEST | An Cheathrú Riabhach Thiar | 3.5 | | |
| CARROWREVAGH | An Cheathrú Riabhach | 97.5 | 3 | 2 |
| CARROWREVAGH BEG | An Cheathrú Riabhach Bheag | 39.2 | 1 | 1 |
| CARROWREVAGH MORE | An Cheathrú Riabhach Mhór | 90.0 | 6 | 1 |
| CARROWROE | An Cheathrú Rua | 75.9 | | 5 |
| CARROWROE | An Cheathrú Rua | 80.6 | | 3 |
| CARROWROE | An Cheathrú Rua | 162.2 | | 9 |
| CARROWROE EAST | An Cheathrú Rua Thoir | 58.1 | | 1 |
| CARROWROE NORTH | An Cheathrú Rua Thuaidh | 927.6 | | 68 |
| CARROWROE NORTH | An Cheathrú Rua Thuaidh | 55.1 | | |
| CARROWROE SOUTH | An Cheathrú Rua Theas | 6.0 | | |
| CARROWROE SOUTH | An Cheathrú Rua Theas | 404.6 | | 62 |
| CARROWROE WEST | An Cheathrú Rua Thiar | 189.7 | | 7 |
| CARROWROE WEST | An Cheathrú Rua Thiar | 441.0 | | 22 |
| CARROWSHANBALLY | Ceathrú Sheanbhealaigh | 118.7 | 2 | 7 |
| CARROWSTEELAGH | Ceathrú Stiallach | 60.9 | 2 | |
| CARTA | An Cheárta | 391.1 | 8 | |
| CARTOOR | An Cartúr | 67.0 | 2 | 3 |
| CARTOORBEG | An Cartúr Beag | 30.1 | 6 | |
| CARTRON | An Cartún | 97.3 | | |
| CARTRON | An Cartrún | 101.1 | | 3 |
| CARTRON | An Cartún | 55.4 | | 3 |
| CARTRON | An Cartrún | 22.5 | | |
| CARTRON | An Leathchartúr | 45.0 | | 5 |
| CARTRON | An Cartrún | 85.1 | | 1 |
| CARTRON | An Cartún | 35.0 | | 2 |
| CARTRON | An Cartrún | 48.1 | | 8 |
| CARTRON | An Cartrún | 8.4 | | |
| CARTRON | An Cartún | 58.6 | | 9 |
| CARTRON | An Cartrún | 51.9 | | 12 |
| CARTRON | An Cartrún | 34.4 | | 2 |
| CARTRON | An Cartrún | 95.7 | | 3 |
| CARTRON | An Cartún | 50.5 | | 8 |
| CARTRON | An Cartrún | 61.5 | | |
| CARTRON | An Cartrún | 46.7 | | |
| CARTRON | An Cartrún | 111.9 | | 4 |
| CARTRON | An Cartún | 170.1 | | 7 |
| CARTRON EAST | An Cartún Thoir | 14.7 | | |
| CARTRON NORTH | An Cartrún Thuaidh | 30.6 | 1 | |
| CARTRON SOUTH | An Cartrún Theas | 28.7 | 4 | |
| CARTRON WEST | An Cartún Thiar | 18.0 | | |
| CARTRONDOOGAN | Cartrún Uí Dhúgáin | 138.0 | | 1 |
| CARTRONDOOGAN | Ceathrú an Ghabhann | 76.3 | | 2 |
| CARTRONEARL | Cartrún an Iarla | 49.1 | | 3 |
| CARTRONLAHAN | An Cartúr Leathan | 411.1 | | 19 |
| CARTRONROE | An Cartún Rua | 146.7 | 2 | 10 |
| CARTRONSHEELA | Cartrún Síle | 50.9 | 4 | 2 |
| CARTRONTRELLICK | Cartrún Treileac | 75.7 | | 4 |
| CASHEL | An Caiseal | 516.6 | | 1 |
| CASHEL | An Caiseal | 250.4 | | 2 |
| CASHLA | Caisle | 114.7 | | 6 |
| CASHLA | Caisle | 170.8 | | 8 |
| CASHLAUNDARRAGH | An Caisleán Darach | 122.0 | 2 | 6 |
| CASHLEEN | Caislín | 141.7 | 6 | 6 |
| CASTLE | An Caisleán | 194.3 | 7 | 4 |
| CASTLE ELLEN | Caisleán Eilean | 153.8 | 13 | 8 |
| CASTLE FFRENCH | An Clochar | 183.9 | 13 | |
| CASTLE FFRENCH EAST | An Clochar Thoir | 155.9 | 1 | 1 |
| CASTLE FFRENCH WEST | An Clochar Thiar | 132.5 | 4 | 6 |
| CASTLEBELLEW | Cluain Óráin Íochtarach | 118.1 | 4 | 3 |
| CASTLEBIN EAST | Caisleán na Binne Thoir | 124.7 | 2 | 6 |
| CASTLEBIN NORTH | Caisleán na Binne Thuaidh | 117.4 | 9 | 3 |
| CASTLEBIN SOUTH | Caisleán na Binne Theas | 59.7 | 1 | 20 |
| CASTLEBLAKENEY | Gallach | 42.8 | 3 | 6 |
| CASTLEBOY | An Caisleán Buí | 184.7 | 6 | 11 |
| CASTLECREEVY | Caisleán na Craobhaí | 176.3 | 3 | 9 |
| CASTLEDALY | An Corrbhaile | 97.1 | 8 | 4 |
| CASTLEFARM | Páirc an Chaisleáin | 77.8 | 8 | 4 |
| CASTLEFIELD | Corr na gCaiseal | 117.4 | 1 | 1 |
| CASTLEGAR | An Caisleán Gearr | 323.7 | | 7 |
| CASTLEGAR | An Caisleán Gearr | 117.6 | | 10 |
| CASTLEGAR EAST | An Caisleán Gearr Thoir | 472.0 | 27 | 5 |
| CASTLEGAR WEST | An Caisleán Gearr Thiar | 131.9 | 5 | |
| CASTLEGROVE EAST | Garrán an Chaisleáin Thoir | 116.9 | 5 | 1 |
| CASTLEGROVE WEST | Garrán an Chaisleáin Thiar | 135.6 | 13 | 5 |
| CASTLEHACKET | Caisleán an Haicéadaigh | 364.4 | 9 | 19 |
| CASTLELAMBERT | Caisleán Lampart | 250.5 | 5 | 20 |
| CASTLEMOYLE | An Caisleán Maol | 80.0 | 1 | 1 |
| CASTLENANCY | Béal Átha na nÉan | 147.9 | 5 | 5 |
| CASTLEPARK | Páirc an Chaisleáin | 20.6 | 3 | 1 |
| CASTLEQUARTER | Ceathrú an Chaisleáin | 138.9 | | 2 |
| CASTLEQUARTER | Ceathrú an Chaisleáin | 21.9 | | 1 |
| CASTLETAYLOR NORTH | Caisleán an Táilliúraigh Thuaidh | 100.8 | 4 | 5 |
| CASTLETAYLOR SOUTH | Caisleán an Táilliúraigh Theas | 174.6 | 9 | 1 |
| CASTLETOGHER | Caisleán an Tóchair | 173.4 | 8 | 4 |
| CASTLETOWN | Ceathrú an Chaisleáin | 58.0 | | 2 |
| CASTLETOWN | Baile an Chaisleáin | 149.6 | | 4 |
| CASTLETOWN | Baile an Chaisleáin | 105.5 | | 1 |
| CASTLETOWN | Baile an Chaisleáin | 49.8 | | |
| CASTLETURVIN | Caisleán Tuirbhin | 157.2 | 11 | 12 |
| CAVE | An Chéibh | 238.8 | | 1 |
| CAVE | An Chéibh | 81.1 | | 2 |
| CHAPELFIELD | Páirc an tSéipéil | 8.3 | 1 | 1 |
| CHAPELPARK | Páirc an tSéipéil | 99.1 | 6 | 1 |
| CHARLESTOWN or POLLNAMUCKA | Poll na Muice | 35.1 | 1 | |
| CHELSEA | Chelsea | 83.3 | 3 | 2 |
| CLADDAGH EAST | An Cladach Thoir | 119.3 | 1 | 7 |
| CLADDAGH WEST | An Cladach Thiar | 142.3 | 7 | |
| CLADDAGHDUFF | An Cladach Dubh | 168.5 | 1 | 8 |
| CLAGGAN | An Cloigeann | 167.2 | | 1 |
| CLAGGERNAGH EAST | Clagarnach Thoir | 81.9 | 2 | 3 |
| CLAGGERNAGH WEST | Clagarnach Thiar | 36.3 | 2 | 9 |
| CLAMPERPARK | Páirc an Chlampair | 45.1 | 2 | 5 |
| CLARARY | Cláraire | 61.6 | 3 | |
| CLARE | An Clár | 32.0 | 5 | 4 |
| CLAREGALWAY | Baile Chláir | 229.3 | | 16 |
| CLAREMADDEN | Clár Uí Mhadaín | 235.5 | 6 | 1 |
| CLAREMOUNT | An Clár Mór | 226.1 | 4 | 17 |
| CLARETUAM | Béal Chláir | 154.9 | 7 | 10 |
| CLASHAGANNY | Clais an Ghainimh | 195.8 | | 1 |
| CLASHAGANNY | Clais an Ghainimh | 82.6 | | 3 |
| CLASHARD | An Chlais Ard | 84.4 | | 1 |
| CLASSAGHROE | An Chlasach Rua | 179.9 | | 1 |
| CLAUREEN | An Cláirín | 28.9 | | |
| CLEAGHBEG | An Chliathach Bheag | 15.1 | | |
| CLEAGHGARVE | An Chliathach Gharbh | 23.5 | | |
| CLEAGHMORE | Cliathach Mhór | 37.1 | 1 | 10 |
| CLEGGAN | An Cloigeann | 369.9 | 4 | 4 |
| CLERHAUN | An Cloichreán | 239.5 | 8 | 9 |
| CLIFDEN | An Clochán | 127.6 | 13 | 93 |
| CLIFDEN DEMESNE | Diméin an Chlocháin | 89.0 | 7 | 9 |
| CLOGH | An Chloch | 663.9 | 5 | 8 |
| CLOGH NORTH | An Chloch Thuaidh | 75.0 | 2 | 6 |
| CLOGH SOUTH | An Chloch Theas | 110.1 | 3 | 1 |
| CLOGHAGALLA EIGHTER | Na Clocha Geala Íochtair | 152.8 | 3 | 1 |
| CLOGHAGALLA OUGHTER | Na Clocha Geala Uachtair | 136.6 | 2 | |
| CLOGHALAHARD | Cloch an Leathaird | 122.1 | 2 | 2 |
| CLOGHANOWER | Cloch an Uabhair | 163.4 | 9 | 7 |
| CLOGHAREVAUN | Cloch an Riabháin | 122.3 | 10 | 20 |
| CLOGHAROASTY | Cloch an Róistigh | 61.0 | 5 | |
| CLOGHASTOOKEEN | Cloch an Stuaicín | 68.8 | 6 | 4 |
| CLOGHATANNA | Cloch an tSonnaigh | 50.6 | | |
| CLOGHAUN | An Clochán | 44.4 | | 12 |
| CLOGHAUN | An Clochán | 395.8 | | 3 |
| CLOGHAUNARD | An Clochán Ard | 84.4 | 1 | 9 |
| CLOGHBALLYMORE | Cloch an Bhaile Mhóir | 91.4 | 4 | 1 |
| CLOGHBOLEY | An Chlochbhuaile | 158.9 | 14 | 1 |
| CLOGHBRACK | An Chloch Bhreac | 26.2 | | |
| CLOGHBRACK | An Chloch Bhreac | 26.5 | | 2 |
| CLOGHBRACK LOWER | An Chloch Bhreac Íochtair | 260.6 | | 4 |
| CLOGHBRACK MIDDLE | An Chloch Bhreac Láir | 49.2 | | 3 |
| CLOGHBRACK UPPER | An Chloch Bhreac Uachtair | 425.0 | | 15 |
| CLOGHER | An Clochar | 68.2 | | 4 |
| CLOGHERBOY | An Clochar Buí | 237.1 | 4 | 10 |
| CLOGHERMORE | An Clochar Mór | 789.8 | | |
| CLOGHERNAGUN | Clochar na gCon | 941.0 | | 1 |
| CLOGHERNALAURA | Clochar na Lára | 288.0 | | |
| CLOGHMORE NORTH | An Chloich Mhór Thuaidh | 442.3 | | |
| CLOGHMORE SOUTH | An Chloich Mhór Theas | 117.0 | | 5 |
| CLOGHNAKEAVA | Cloch na Céibhe | 104.5 | 4 | 5 |
| CLOGHROAK | Cloch an Chrócaigh | 139.8 | 14 | 7 |
| CLOGHSCOLTIA | An Chloch Scoilte | 83.4 | | 12 |
| CLOGHVOLEY | An Chlochbhuaile | 365.8 | | |
| CLONBERN | Cluain Bheirn | 380.1 | 4 | 16 |
| CLONBROCK | Cluain Broc | 28.6 | | |
| CLONBROCK DEMESNE | Diméin Chluain Broc | 794.9 | 29 | 10 |
| CLONCO | Cluain Có | 276.3 | 4 | 1 |
| CLONFERT (Butson) | Cluain Fearta (Butson) | 656.9 | 3 | |
| CLONFERT DEMESNE | Cluain Fearta | 212.7 | 10 | 3 |
| CLONFERT DEMESNE BOG | Móin Chluain Fearta | 110.5 | | |
| CLONFERT NORTH (Seymour) | Cluain Fearta (Seymour) Thuaidh | 69.9 | 4 | |
| CLONFERT SOUTH (Seymour) | Cluain Fearta (Seymour) Theas | 6.7 | 3 | 1 |
| CLONKEENKERRILL | Cluain Caoin Cairill | 368.6 | 5 | 13 |
| CLOON | An Chluain | 227.7 | | 14 |
| CLOON | An Chluain | 139.6 | | 3 |
| CLOON | Cluain Ó Maonagáin | 143.3 | | 3 |
| CLOON | An Chluain | 38.4 | | 1 |
| CLOONACALLEEN | Cluain Caillín | 112.1 | 6 | |
| CLOONACASTLE | Cluain an Chaisleáin | 92.1 | 3 | |
| CLOONACAUNEEN | Cluain Mhic Cáinín | 182.6 | | 13 |
| CLOONACAUNEEN | Cluain Mhic Cáinín | 12.0 | | |
| CLOONADARRAGH | Cluain Idir Dhá Áth | 134.2 | | |
| CLOONAGAWNAGH | Cluain Gamhnach | 29.2 | | 1 |
| CLOONAGH | Cluain Each | 183.1 | | |
| CLOONAGH | Cluain Each | 229.9 | | 2 |
| CLOONAGH | Cluanach | 18.1 | | 2 |
| CLOONAGHGARVE | Cluanach Gharbh | 77.0 | 2 | 1 |
| CLOONAGHMORE | Cluanach Mhór | 18.5 | | |
| CLOONAHINCH | Cluain na hInse | 87.2 | 2 | 10 |
| CLOONAMERAGAUN | Cúil na Méaragán | 41.0 | 5 | 3 |
| CLOONAMORE | Cluanach Mhór | 268.2 | 9 | 13 |
| CLOONANEARLA | Cluain an Iarla | 56.5 | | |
| CLOONARKAN | Cluain Earcáin | 144.2 | | |
| CLOONASCARBERRY (Cheevers) | Cluain Scairbre (Cheevers) | 76.8 | 1 | 1 |
| CLOONASCARBERRY NORTH | Cluain Scairbre Thuaidh | 39.3 | | |
| CLOONASCARBERRY SOUTH | Cluain Scairbre Theas | 83.0 | 2 | 2 |
| CLOONASCRAGH | Cluain Eascrach | 164.3 | | 4 |
| CLOONASCRAGH | Cluain Eascrach | 415.2 | | |
| CLOONASCRAGH | Cluain Eascrach | 100.2 | | |
| CLOONASCRAGH | Cluain Eascrach | 350.5 | | 17 |
| CLOONATLEVA LOWER | Cluain an tSléibhe Íochtair | 162.9 | | 4 |
| CLOONATLEVA UPPER | Cluain an tSléibhe Uachtair | 24.6 | 1 | |
| CLOONATLOUKAUN | Cluain an tSleabhcáin | 46.2 | | 2 |
| CLOONAVIHONY | Cluain Mhic an Bhithiúnaigh | 183.5 | | 2 |
| CLOONBANNIV | Cluain Banbh | 138.0 | | |
| CLOONBAR | Cluain Barr | 348.0 | | 2 |
| CLOONBEG | Cluain Beag | 129.4 | | 1 |
| CLOONBEG | Cluain Beag | 21.3 | | 2 |
| CLOONBENES | Cluain Béinéis | 167.6 | | 3 |
| CLOONBOO | Cluain Bú | 193.8 | | 18 |
| CLOONBOO BEG | Cluain Bú Beag | 54.6 | | |
| CLOONBOO MORE | Cluain Bú Mór | 73.8 | | 1 |
| CLOONBORNIA | Cluain Boirne | 127.5 | | |
| CLOONBRONE | Cluain Brón | 126.0 | | 2 |
| CLOONBRUSK | Cluain Brosc | 65.1 | | |
| CLOONBRUSK | Cluain Brosc | 129.7 | | 2 |
| CLOONBUR | An Fhairche | 74.7 | | 14 |
| CLOONCAH | Cluain Catha | 309.4 | | 6 |
| CLOONCAH | Cluain Catha | 157.2 | | 1 |
| CLOONCALLAGA | Cluain Calga | 232.3 | | 10 |
| CLOONCALLIS | Cluain Mhic Áilíosa | 120.0 | 3 | |
| CLOONCANNON | Cluain Canann | 110.7 | 1 | |
| CLOONCANNON (Dillon) | Cluain Canann (Dillon) | 115.2 | 2 | 8 |
| CLOONCANNON (Kelly) | Cluain Canann (Kelly) | 158.7 | 8 | 2 |
| CLOONCON EAST | Cluain Con Thoir | 276.7 | 2 | 7 |
| CLOONCON WEST | Cluain Con Thiar | 302.0 | 1 | 8 |
| CLOONCONA | Cluain Cuanna | 103.7 | 2 | 1 |
| CLOONCONABEG | Cluain Cuanna Beag | 25.4 | | 2 |
| CLOONCONORE | Cluain Conóir | 189.6 | | |
| CLOONCONRA | Cluain Conaire | 93.1 | | 1 |
| CLOONCONRA | Cluain Conaire | 93.8 | | 3 |
| CLOONCREE | Cluain Crí | 30.8 | 3 | 1 |
| CLOONCULLAUN | Cluain Coileáin | 272.9 | 1 | |
| CLOONCUNNY | Cluain Connaidh | 143.3 | 2 | |
| CLOONCURREEN | Cluain Coirinn | 81.9 | 1 | 1 |
| CLOONDADAUV | Cluain Dá Dhamh | 64.4 | 3 | |
| CLOONDAHAMPER (Blake) | Cluain Dá Thiompar (Blake) | 190.5 | | 11 |
| CLOONDAHAMPER (Brown) | Cluain Dá Thiompar (Brown) | 81.8 | | 4 |
| CLOONDARONE | Cluain Dá Rón | 223.7 | 1 | 3 |
| CLOONDERGAN | Cluain Deargan | 287.8 | 4 | 7 |
| CLOONDINE | Cluain Daighin | 37.7 | | 4 |
| CLOONDOYLE BEG | Cluain Dúill Beag | 76.5 | | |
| CLOONDOYLE MORE | Cluain Dúill Mór | 52.4 | 2 | |
| CLOONDROON | Cluain Drún | 144.1 | | |
| CLOONEDEROWEN | Cluain Idir Dhá Abhainn | 40.5 | 4 | 1 |
| CLOONEE | Cluain Í | 101.2 | | 3 |
| CLOONEE | Cluain Aoi | 116.3 | | 2 |
| CLOONEEN | An Cluainín | 29.8 | | |
| CLOONEEN | An Cluainín | 76.4 | | 8 |
| CLOONEEN | An Cluainín | 32.6 | | 5 |
| CLOONEEN | An Cluainín | 8.2 | | |
| CLOONFAGHNA | Cluain Fachna | 237.0 | 5 | 4 |
| CLOONFANE | Cluain Féan | 199.7 | 1 | 5 |
| CLOONFINNOGE | Cluain Feannóg | 40.1 | | |
| CLOONFUSH | Cluain Fois | 161.6 | 4 | 8 |
| CLOONGAWNA | Cluain Gamhna | 77.5 | | |
| CLOONIFF | Cluain Duibh | 457.5 | | 55 |
| CLOONIGNY | Cluain Íne | 414.1 | 16 | 3 |
| CLOONINAGH | Cluain Eidhneach | 163.6 | 1 | 1 |
| CLOONINEEN | Cluain na nIníon | 131.1 | 3 | |
| CLOONISLE | Cluain Aidhle | 364.4 | 5 | 1 |
| CLOONKEA | Cluain Cé | 85.8 | 4 | 1 |
| CLOONKEELY | Cluain Caolaigh | 44.6 | | 3 |
| CLOONKEEN | Cluain Caoin | 101.5 | | |
| CLOONKEEN | Cluain Caoin | 213.6 | | 4 |
| CLOONKEEN | Cluain Caoin | 391.5 | | |
| CLOONKEEN (Davies) | Cluain Caoin (Davies) | 37.7 | | 2 |
| CLOONKEEN (Ffrench) | Cluain Caoin (Ffrench) | 67.2 | | 1 |
| CLOONKEEN (Kelly) | Cluain Caoin (Kelly) | 49.6 | 2 | 1 |
| CLOONKEEN (Netterville) | Cluain Caoin (Netterville) | 38.8 | | |
| CLOONKEEN (Waldron) | Cluain Caoin (Waldron) | 76.1 | 1 | 2 |
| CLOONKEEN EAST | Cluain Caoin Thoir | 87.8 | | |
| CLOONKEEN EIGHTER | Cluain Coill Íochtair | 91.8 | 1 | |
| CLOONKEEN NORTH | Cluain Caoin Thuaidh | 206.9 | 4 | 1 |
| CLOONKEEN OUGHTER | Cluain Coill Uachtair | 184.8 | | 1 |
| CLOONKEEN SOUTH | Cluain Caoin Theas | 56.9 | 2 | |
| CLOONKEEN WEST | Cluain Caoin Thiar | 73.7 | | |
| CLOONKEENBEG | Cluain Caoin Beag | 168.8 | | 2 |
| CLOONKEENCLARE | Cluain Caoin Cláir | 120.3 | | 4 |
| CLOONKEENLEANANODE | Cluain Caoin Léana an Fhóid | 157.8 | | 1 |
| CLOONKEENMORE NORTH | Cluain Caoin Mór Thuaidh | 190.8 | | 3 |
| CLOONKEENMORE SOUTH | Cluain Caoin Mór Theas | 202.7 | | |
| CLOONKEENNAGRAN | Cluain Caoin na gCrann | 172.5 | | |
| CLOONLAHAN (Eyre) | Cluain Leathan (Eyre) | 122.4 | 2 | 1 |
| CLOONLAHAN (Geoghegan) | Cluain Leathan (Geoghegan) | 70.3 | 4 | 4 |
| CLOONLARA NORTH | Cluain Lára Thuaidh | 87.9 | 4 | |
| CLOONLARA SOUTH | Cluain Lára Theas | 189.4 | 2 | 1 |
| CLOONLEE | Cluain Lao | 221.8 | 3 | 7 |
| CLOONLEENAUN | Cluain Leannáin | 89.2 | | 6 |
| CLOONLOOAUN | Cluain Luáin | 332.0 | 3 | 18 |
| CLOONLUSK | Cluain Loiscthe | 135.3 | 4 | 1 |
| CLOONLYON | Cluain Laighean | 437.5 | 3 | 9 |
| CLOONMAGHAURA | Cluain Moghára | 276.5 | 1 | 1 |
| CLOONMAIN | Cluain Meáin | 146.4 | 5 | 1 |
| CLOONMINDA | Cluain Mionda | 120.0 | | 3 |
| CLOONMORE | Cluain Mór | 355.8 | | 14 |
| CLOONMORE | Cluain Mór | 116.6 | | 2 |
| CLOONMORE | Cluain Mór | 135.3 | | 5 |
| CLOONMORE | Cluain Mór | 387.9 | | |
| CLOONMORRIS | Cluain Mhuirís | 50.6 | 3 | |
| CLOONMOYLAN | Cluain Maoláin Beag | 179.7 | | 8 |
| CLOONMOYLAN | Cluain Maoláin Mór | 449.2 | | 12 |
| CLOONMOYLE | Cluain Maol | 76.4 | 5 | 1 |
| CLOONMWEELAUN | Coill Mhaoláin | 255.3 | | 3 |
| CLOONMWEELAUN | Cluain Maoláin | 149.3 | | |
| CLOONNABINNIA | Cluain na Binne | 178.1 | | 9 |
| CLOONNABRICKA | Cluain na Brice | 162.2 | 2 | 2 |
| CLOONNACARTAN | Cúil na Ceártan | 633.9 | | 5 |
| CLOONNACAT | Cluain Cat | 172.4 | 2 | |
| CLOONNACORRA | Cluain an Churraigh | 51.5 | | |
| CLOONNACROSS | Cluain na Croise | 99.2 | 3 | 1 |
| CLOONNACROSS | Cluain na Croise | 62.5 | 3 | 8 |
| CLOONNACUSHA | Cluain Coise | 135.7 | 1 | |
| CLOONNAFUNSHIN | Cluain na Fuinseann | 71.0 | 1 | |
| CLOONNAGARK | Cluain na gCearc | 40.8 | | 1 |
| CLOONNAGLASHA | Cluain na Glaise | 415.6 | 3 | 2 |
| CLOONNAHAHA | Cluain na hÁithe | 133.1 | 8 | 14 |
| CLOONNAMARVE | Cluain na Marbh | 19.3 | | 1 |
| CLOONNAMASKRY | Cluain na Meascraí | 115.9 | 2 | |
| CLOONNASEE | Cluain na Saoi | 184.3 | 1 | 10 |
| CLOONNAVADDOGE | Cluain na bhFeadóg | 241.7 | | 9 |
| CLOONNAVARNOGE | Cluain na bhFearnóg | 64.0 | 2 | 1 |
| CLOONONAGHAUN | Cluain Onchon | 109.1 | | 4 |
| CLOONOO EAST | Cluain Uamha Thoir | 89.5 | | 5 |
| CLOONOO WEST | Cluain Uamha Thiar | 41.8 | 1 | |
| CLOONOOLISH | Cluain Dúlais | 128.6 | | |
| CLOONOON | Cluain Ún | 153.1 | 1 | 1 |
| CLOONORAN | Cluain Oráin | 107.1 | | 1 |
| CLOONORANOUGHTER | Cluain Óráin Uachtarach | 191.4 | 1 | 3 |
| CLOONPEE | Cluain Pí | 51.4 | 2 | |
| CLOONPRASK | Cluain Praisce | 76.4 | 1 | |
| CLOONRANE | Cluain Ráin | 192.6 | 3 | 9 |
| CLOONRELEAGH (Bellew) | Cluain Roilíoch (Bellew) | 145.8 | | 13 |
| CLOONRELEAGH EAST | Cluain Roilíoch Thoir | 3.9 | | |
| CLOONRELEAGH WEST | Cluain Roilíoch Thiar | 51.1 | | |
| CLOONRIDDIA | Cluain Roide | 73.0 | | |
| CLOONRUFF | Cluain Ruach | 98.0 | | |
| CLOONRUFF | Cluain Ruach | 192.6 | | |
| CLOONSHEASE (Daly) | Cluain na Séasa (Daly) | 31.3 | | |
| CLOONSHEASE (Persse) | Cluain na Seasa (Persse) | 120.0 | | |
| CLOONSHEE | Cluain Sí | 31.1 | 1 | |
| CLOONSHEE (Dillon) | Cluain Sí (Dillon) | 85.2 | 1 | |
| CLOONSHEE (Kelly) | Cluain Sí (Kelly) | 33.3 | 15 | |
| CLOONSHEE (Rochfort) | Cluain Sí (Rochfort) | 211.6 | 1 | 2 |
| CLOONSHEE (Trench) | Cluain Sí (Trench) | 91.4 | | |
| CLOONSHEECAHILL | Cluain Sí Cathail | 289.1 | 1 | 23 |
| CLOONSHEEN | Cluain Síon | 235.5 | 8 | 2 |
| CLOONSHIVNA | Cluain Simhne | 110.4 | | |
| CLOONSHIVNA (Kelly) | Cluain Simhne (Kelly) | 114.1 | 1 | 6 |
| CLOONTEEN | An Cluaintín | 312.0 | | 6 |
| CLOONTEEN | An Cluaintín | 21.6 | | |
| CLOONTOOA | Cluain Tuaidh | 196.7 | | 3 |
| CLOONYCONAUN | Cluain Uí Choineáin | 50.5 | 2 | 3 |
| CLOONYKEEVAN | Cluain Uí Chiabháin | 60.3 | 2 | |
| CLOONYMORRIS | Cluain Uí Mhuirís | 43.7 | 2 | 2 |
| CLOOSH | An Chluais | 103.9 | 1 | 23 |
| CLOOSHGEREEN | Cluais Chéirín | 367.5 | 4 | 14 |
| CLORAN | An Cloichreán | 174.3 | 8 | 5 |
| CLOVERFIELD | Gort na Seamar | 30.2 | 1 | 1 |
| CLOVERPARK | Páirc na Seamar | 20.5 | 1 | |
| CLUID | An Chlúid | 111.3 | 1 | |
| CLUIDREVAGH | An Chlúid Riabhach | 274.1 | 5 | 17 |
| CLYDAGH | Claídeach | 132.7 | | 1 |
| CLYDAGH | Claídeach | 123.5 | | 5 |
| CLYNAGH | Cladhnach | 345.3 | | 44 |
| CLYNAGH ISLAND | Cladhnach | 42.4 | | |
| COALPITS | Clais an Ghuail | 156.5 | | 4 |
| COARSEFIELD | Sceach Liag | 107.7 | | |
| COARSEPARK or PARKGARVE | An Pháirc Gharbh | 48.2 | | |
| COARSEPARKS | An Gort Garbh | 61.6 | | |
| COCKSTOWN EAST | Baile na gCoileach Thoir | 34.5 | | 3 |
| COCKSTOWN WEST | Baile na gCoileach Thiar | 40.7 | | 1 |
| COGAULA | Cagála | 249.2 | 3 | 14 |
| COLDWOOD or FOORKILL | Fuarchoill | 240.4 | 4 | 19 |
| COLESGROVE | Garrán Niocóil | 75.0 | 5 | 3 |
| COLMANSTOWN | Baile Uí Chlúmháin | 620.8 | 2 | 13 |
| COMMON | An Coimín | 12.0 | | |
| COMMON | An Coimín | 24.5 | | |
| COMMON | An Coimín | 10.2 | | |
| COMMON or TURLOUGHNAROYEY | Turlach na Rua | 38.7 | | |
| COMMONS | An Coimín | 227.2 | | 2 |
| COMMONS EAST | An Coimín Thoir | 174.1 | 2 | 2 |
| COMMONS WEST | An Coimín Thiar | 153.5 | | |
| CONAGHER | Conachar | 330.0 | 11 | 2 |
| CONICAR | An Coinicéar | 47.4 | | 1 |
| CONICAR | An Coinicéar | 50.7 | | |
| CONNET | Conalt | 29.5 | 1 | |
| CONORSPARK | Páirc Chonchúir | 20.0 | 1 | |
| COOL | An Chúil | 75.5 | 1 | |
| COOLACLOY | Cúl an Chlaí | 51.8 | | 4 |
| COOLACURN NORTH | Cúil an Choirn Thuaidh | 14.9 | 1 | |
| COOLACURN SOUTH | Cúil an Choirn Theas | 41.2 | 2 | 3 |
| COOLADOOAUN | Cúil Uí Dhubháin | 62.1 | 2 | 2 |
| COOLAGARRAUN | Cúil an Gharráin | 23.4 | | 1 |
| COOLAGH | Cúlach | 63.3 | | 1 |
| COOLAGH | Na Cualacha | 25.1 | | |
| COOLANILLAUN | Cúl an Oileáin | 109.8 | | |
| COOLARAN | Cúl Árann | 228.6 | 5 | 1 |
| COOLASPADDAUN | Cúil an Spadáin | 67.6 | 2 | |
| COOLBAUN | An Chúil Bhán | 35.0 | 1 | |
| COOLBAUN WEST | An Chúil Bhán Thiar | 32.9 | 1 | |
| COOLBEG | An Chúil Bheag | 102.4 | 8 | |
| COOLCARTA EAST | Cúil Cheárta Thoir | 267.1 | 2 | 1 |
| COOLCARTA WEST | Cúil Cheárta Thiar | 331.5 | 4 | 3 |
| COOLDORRAGHA | An Chúil Dorcha | 73.5 | | |
| COOLDORRAGHA | An Chúil Dorcha | 67.0 | | 3 |
| COOLE DEMESNE | An Chúil | 547.5 | 14 | 22 |
| COOLEENY | Na Cúilíní | 138.2 | 4 | 5 |
| COOLEENY EAST | Na Cúilíní Thoir | 72.8 | | 1 |
| COOLEENY WEST | Na Cúilíní Thiar | 42.4 | | 2 |
| COOLFIN | Cúl Fionn | 181.5 | | 3 |
| COOLFIN | Cúil Fhinn | 53.8 | | |
| COOLFOWERBEG | Cúil Fobhair Bheag | 34.9 | | 1 |
| COOLIN | Cualann | 171.2 | | |
| COOLLICKNALEA | Cúil Leic na Liath | 128.8 | 2 | |
| COOLNAGEERAGH | Cúil na gCaorach | 83.6 | | 3 |
| COOLOLLA | Cúil Ola | 146.0 | 3 | 2 |
| COOLOO | Cúil Lú | 404.5 | 3 | 9 |
| COOLOO MOUNTAIN | Sliabh Chúil Lú | 154.3 | | 13 |
| COOLOORTA | Cúil an Úrtain | 29.8 | 1 | |
| COOLPARK | Gort na Sceiche | 79.1 | | 2 |
| COOLPOWRA | Cúil Phóire | 147.3 | | 10 |
| COOLRAUGH | Cúlrach | 98.8 | | |
| COOLREVAGH | An Chúil Riabhach | 134.2 | 2 | 4 |
| COOLSRAHRA | Cúil Shrathra | 123.1 | 5 | 8 |
| COOLTYMURRAGHY | Cuil Tí Murchú | 133.7 | | 4 |
| COOLTYMURRAGHY | Cúil Tí Murchú | 173.8 | | 3 |
| COOLWONEEN | Cúl an Mhóinín | 34.1 | | 3 |
| COORACURKIA | Cuar an Choirce | 127.4 | 4 | 6 |
| COORBAUN | An Chúil Bhán | 33.3 | 2 | 1 |
| COOS NORTH | An Cuas Thuaidh | 489.8 | | 4 |
| COOS SOUTH | An Cuas Theas | 397.3 | 2 | 10 |
| COOSAUN | An Cuasán | 29.5 | | |
| COOTHAGH | Cútach | 40.8 | | |
| COPPANAGH | Copanach | 71.7 | | 1 |
| COPPANAGH | Copanach | 924.3 | | |
| CORBALLY | An Corrbhaile | 25.7 | | 2 |
| CORBALLY | An Corrbhaile | 90.0 | | 7 |
| CORBALLY (Hogan) | An Corrbhaile (Hogan) | 112.9 | 1 | 3 |
| CORBALLY BEG | An Corrbhaile Beag | 45.8 | | 2 |
| CORBALLY MORE | An Corrbhaile Mór | 232.6 | 1 | 4 |
| CORBALLY NORTH | An Corrbhaile Thuaidh | 65.3 | | 8 |
| CORBALLY SOUTH | An Corrbhaile Theas | 320.9 | 10 | 12 |
| CORBALLYMORE and CAMGORT | An Corrbhaile Mór agus an Camghort | 56.7 | 5 | |
| CORBAUN | An Chorr Bhán | 110.4 | 2 | 4 |
| CORBOLEY (Lynch) | An Chorrbhuaile (Lynch) | 99.4 | | 12 |
| CORBOLEY (Morgan) | An Chorrbhuaile (Morgan) | 283.1 | | 15 |
| CORCULLEN | Corr Chuilinn | 4.5 | | 2 |
| CORCULLEN | Corr Chuilinn | 110.4 | | 21 |
| CORDARRAGH | Corr Dharach | 168.8 | | 4 |
| CORGARVE | An Chorr Gharbh | 107.8 | 1 | 1 |
| CORGERRY EIGHTER | Corrdhoire Íochtair | 143.8 | 1 | 3 |
| CORGERRY OUGHTER | Corrdhoire Uachtair | 167.2 | 3 | 6 |
| CORILLAUN | An Corroileán | 97.8 | | 1 |
| CORKER | An Charcair | 186.0 | 9 | |
| CORLACKAN | An Chorrleaca | 44.0 | | 2 |
| CORLACKAN | An Chorrleaca | 152.2 | | 4 |
| CORLISKEA | Corrlios Sciach | 181.6 | | |
| CORMACUAGH EAST | Corr Mhic Dhuach Thoir | 89.0 | | |
| CORMACUAGH WEST | Corr Mhic Dhuach Thiar | 166.8 | | 2 |
| CORMEELICK NORTH | Corrmhíleac Thuaidh | 42.4 | | |
| CORMEELICK SOUTH | Corrmhíleac Theas | 36.1 | 1 | 1 |
| CORMICK | Ceathrú Mhic Dhúg | 44.8 | | |
| CORMICK | Ceathrú Mhic Dhúg | 43.6 | | |
| CORNACARTAN | Corr na Ceártan | 85.9 | | 1 |
| CORNACOYNTIA | Corr na Cainte | 53.6 | 1 | |
| CORNADRUM | Corr na Dromainne | 27.1 | 1 | |
| CORNAMINAUN | Corr na Meannán | 21.7 | | |
| CORNAMONA | Corr na Móna | 139.5 | | 9 |
| CORNAMUCKLAGH | Corr na Muclach | 152.2 | | 2 |
| CORNAMUCKLAGH | Corr na Muclach | 89.9 | | 4 |
| CORNANAFF | Corr na nDamh | 80.1 | 2 | |
| CORNANANTA BEG | Corr na Neanta Bheag | 102.8 | | 1 |
| CORNANANTA MORE | Corr na Neanta Mhór | 92.1 | | 3 |
| CORNARONA | Cor na Rón | 636.5 | | 59 |
| CORR | An Comhar | 193.3 | 4 | 1 |
| CORRABAUN | An Chora Bhán | 94.7 | | 1 |
| CORRABAUN | An Chora Bhán | 101.3 | | 2 |
| CORRABAUN | An Chora Bhán | 38.0 | | |
| CORRACOOLIA | Corr an Chuaille | 123.8 | | 7 |
| CORRACULLIN | Corr Chuilinn | 147.8 | | 1 |
| CORRAFAIREEN | Cora Phiairín | 209.0 | 13 | 11 |
| CORRALEA | An Chora Liath | 69.5 | | |
| CORRALEA | An Chora Liath | 87.2 | | |
| CORRALEA | An Chora Liath | 75.5 | | 5 |
| CORRALEA WEST | An Chora Liath Thiar | 0.6 | | 1 |
| CORRALOUGH | Corr an Locha | 195.4 | 8 | 18 |
| CORRALOUGH SOUTH | Corr an Locha Theas | 30.6 | | 4 |
| CORRAMAEEAGH | Corra Maigh Fhiach | 237.6 | | |
| CORRANDOO | An Corrán Dubh | 65.2 | 1 | |
| CORRANDRUM | Cor an Droma | 218.7 | 10 | 2 |
| CORRANDULLA | Cor an Dola | 143.5 | | 24 |
| CORRANEENA | Corr an Aonaigh | 167.8 | 9 | 8 |
| CORRANELLISTRUM | Corr an Fheileastraim | 100.1 | 1 | |
| CORRANTARRAMUD | Corr an Tearmaid | 323.0 | 5 | 6 |
| CORROFIN | Cora Finne | 309.1 | 11 | 22 |
| CORRSPARK | Páirc an Chorraigh | 69.4 | 4 | 2 |
| CORRY | An Chora | 55.1 | | 2 |
| CORRY | An Chora | 47.0 | | 2 |
| CORSKEAGH (Daly) | Corrsceachach (Daly) | 297.7 | 3 | 7 |
| CORSKEAGH (Trench) | Corrsceachach (Trench) | 135.3 | | 1 |
| CORSKEAGH BEG | An Chorrsceach Bheag | 47.5 | | |
| CORSKEAGH MORE | An Chorrsceach Mhór | 102.5 | | 1 |
| COSMONA | Cois Móna | 162.2 | 3 | 64 |
| COSSAUN | An Cosán | 109.0 | 1 | 4 |
| COSSAUNACLAMPER | Cosán an Chlampair | 31.4 | | 1 |