| Caher, Louisburgh | — | 9 |
| Cahermaculick, Shrule | — | 5 |
| Cahir, Louisburgh | — | 7 |
| Callacoon, Louisburgh | €275,000 | 6 |
| Callow, Foxford | — | 6 |
| Cappacurry, Ballinrobe | — | 5 |
| Carne, Belmullet | — | 5 |
| Carrabawn, Westport | — | 10 |
| Carrabeag, Castlebar | — | 6 |
| Carrabeag, Newport | €249,167 | 5 |
| Carrabeag, Newport Road | €265,000 | 83 |
| Carrabeg, Newport Road | €315,417 | 22 |
| Carraig Mor, Ballindine | — | 5 |
| Carralavin, Bonniconlon | — | 7 |
| Carramore Drive, Knock | €190,000 | 21 |
| Carrick, Kiltimagh | — | 8 |
| Carrowbaun, Swinford | — | 7 |
| Carrowbaun, Westport | — | 12 |
| Carrowbeg, Kilkelly | — | 6 |
| Carrowgarve, Crossmolina | — | 7 |
| Carrowholly, Westport | €339,250 | 8 |
| Carrowkeel, Murrisk | — | 7 |
| Carrowkeeran, Murrisk | — | 9 |
| Carrowkeribla, Attymass | — | 7 |
| Carrowmore, Knock | €134,000 | 9 |
| Carrowmore Drive, Knock | €159,250 | 16 |
| Carrowmore Meadows, Carrowmore | — | 7 |
| Carrowmore Meadows, Knock | €129,875 | 56 |
| Carrowskeheen, Lahardane | — | 5 |
| Cartron, Killasser | — | 5 |
| Cashel, Claremorris | — | 5 |
| Cashel, Foxford | — | 6 |
| Castle Grove, Castlebar | €182,500 | 8 |
| Castle Rd, Ballina | — | 7 |
| Castle Row, Ballina | — | 5 |
| Castle Street, Castlebar | — | 5 |
| Castlebar Road, Westport | — | 5 |
| Castlecourt, Ballina | €198,000 | 15 |
| Castlefield Manor, Ballina | €165,000 | 16 |
| Castlefield Manor, Killala Road | €180,000 | 15 |
| Castlegar, Claremorris | — | 6 |
| Castlegrove, Castlebar | €170,000 | 21 |
| Castlegrove East, Castlebar | €185,500 | 14 |
| Castlegrove West, Castlebar | €180,000 | 13 |
| Castlehill Park, Castlebar | €152,000 | 16 |
| Castlehill Park, Turlough Rd | — | 10 |
| Castleroyan, Kiltimagh | — | 5 |
| Castletown, Cross | — | 5 |
| Cavendish Lane, Castlebar | — | 8 |
| Cedar Close, Newport Road | €524,229 | 5 |
| Cedar Court, Cedar Park | — | 7 |
| Cedar Drive, Cedar Park | €398,679 | 8 |
| Cedar Lane, Cedar Park | — | 5 |
| Cedar Place, Cedar Park | — | 6 |
| Chambers Court, Cavendish Lane | — | 10 |
| Chapel Court, Chapel Lane | €140,000 | 11 |
| Chapel Court, Claremorris | €95,000 | 10 |
| Chapel Lane, Claremorris | — | 10 |
| Chapel Lane, Killala | — | 5 |
| Chapel Road, Ballinrobe | — | 8 |
| Chapel Street, Charlestown | — | 6 |
| Chapel Street, Kiltimagh | — | 9 |
| Chapel Street, Louisburgh | — | 7 |
| Chapel Street, Swinford | — | 5 |
| Chapel View, Crossmolina | — | 5 |
| Chapel Walk, Church St | €15,000 | 5 |
| Charles St, Castlebar | — | 7 |
| Cherrington Place, Castlebar | — | 6 |
| Cherrivale, Ballyhaunis | — | 6 |
| Chestnut Grove, Castlebar | €182,500 | 49 |
| Childers Heights, Ballina | €185,500 | 59 |
| Church Road, Ballina | — | 11 |
| Church Road, Belmullet | €150,000 | 8 |
| Church Street, Charlestown | — | 6 |
| Church View, Balla | €202,500 | 7 |
| Church View, Ballinrobe | — | 7 |
| Church View, Lahardane | — | 5 |
| Church View, Swinford | €132,000 | 12 |
| Churchfield, Knock | €147,000 | 13 |
| Churchfield Manor, Killala | — | 10 |
| Churchfields, Shrule | €242,500 | 23 |
| Churchview, Balla | — | 7 |
| Cill O Seighin, Ballinrobe | €190,000 | 10 |
| Cill O Seighin, Kilmaine Road | €199,500 | 29 |
| Cinnamon Wharf, The Quay | — | 16 |
| Circular Road, Ballina | €175,000 | 11 |
| Clare Aoibhinn, Claremorris | — | 5 |
| Clare St, Ballyhaunis | — | 9 |
| Claremount, Claremorris | €275,000 | 9 |
| Claremount Manor, Claremorris | €218,750 | 18 |
| Clareville, Ballindine Rd | — | 6 |
| Clareville, Claremorris | €220,000 | 11 |
| Cloonamna, Kilmovee | — | 6 |
| Clooncarha, Kilmovee | — | 5 |
| Clooneen, Kilmeena | — | 5 |
| Cloonfinish, Swinford | — | 6 |
| Cloongoonagh, Tooreen | — | 5 |
| Cloongullane, Swinford | — | 8 |
| Cloonkeen, Castlebar | — | 7 |
| Cloonlara, Swinford | — | 7 |
| Cloonlavish, Knock | — | 5 |
| Cloonmore, Carracastle | — | 5 |
| Cloonskill, Liscarney | — | 5 |
| Cloontumper, Bekan | — | 6 |
| Cloonturk, Kilkelly | — | 6 |
| Cloughboley, Manulla | — | 5 |
| Cluain Aoibhin, Pontoon Road | €255,500 | 9 |
| Cluain Aoibhinn, Claremorris | €232,000 | 15 |
| Cluain Aoibhinn, Claremount | €275,000 | 15 |
| Cnoc an Dara, Belgarrow | — | 5 |
| Cnoc an Dara, Foxford | — | 9 |
| Coill Abhainn, Swinford | — | 6 |
| Cois Abhainn, Ballinrobe Road | €268,000 | 17 |
| Cois Abhainn, Kilmovee | €160,000 | 13 |
| Cois Na Habhann, Bonniconlon | — | 7 |
| College Green, Claremorris | — | 5 |
| College Park, Logmore | €168,000 | 15 |
| College View, Westport Road | €204,912 | 40 |
| College View Avenue, Westport Road | — | 15 |
| College View Crescent, Westport Road | — | 10 |
| College View Green, Westport Road | €226,872 | 19 |
| College View Grove, Westport Road | €273,128 | 6 |
| College View Lane, Westport Road | €254,075 | 6 |
| College View Place, Westport Road | — | 5 |
| College Woods, Balla | €211,500 | 47 |
| Connolly Street, Ballina | — | 5 |
| Convent Hill, Ballina | — | 5 |
| Convent Hill Ave, Ballina | €125,000 | 13 |
| Convent Hill Crescent, Ballina | €151,500 | 10 |
| Convent Rd, Ballinrobe | — | 9 |
| Convent Road, Claremorris | €168,000 | 20 |
| Corclough West, Belmullet | — | 5 |
| Corcoran Terrace, Ballina | — | 5 |
| Corcorans Terrace, Ballina | €100,000 | 10 |
| Cordarragh, Kiltimagh | — | 9 |
| Cormullen, Foxford | — | 11 |
| Cornaroya Manor, Ballinrobe | — | 13 |
| Cornfield, Hollymount | — | 5 |
| Cornmarket, Ballinrobe | €145,000 | 15 |
| Corr Na Gcloch, Ballinrobe | — | 8 |
| Corr Na Gcloch, New St | €110,000 | 10 |
| Cottage Road, Breaffy | — | 6 |
| Courtyard, Mulranny | — | 8 |
| Cranmore, Carracastle | — | 6 |
| Craobh Ban, Quay Road | — | 5 |
| Creagh Road, Ballinrobe | €72,000 | 16 |
| Creggs Rd, Ballina | — | 5 |
| Crofton Park, Ballina | — | 6 |
| Cross East, Cross | — | 5 |
| Cual Gara, Teeling Street | — | 9 |
| Cuan Oisri, Belmullet | — | 9 |
| Cuillonaughton, Callow | — | 5 |
| Culleen, Kilsallagh | €300,000 | 11 |
| Culleens, Killala Road | — | 9 |
| Culmore, Kilkelly | — | 7 |
| Culmore, Swinford | — | 5 |
| Currabaggan, Knockmore | — | 6 |
| Curradrish, Foxford | — | 8 |
| Curries, Ballyhaunis | — | 5 |
| Cushinkeel, Westport | — | 6 |
| Cushlough, Saleen | €175,000 | 16 |
| Cuslough, Saleen | €189,500 | 19 |
| The Common, Cornmarket | — | 9 |
| The Commons, Ballina | — | 9 |
| The Crescent, Churchfield | — | 20 |
| The Curragh, Castlebar | €224,000 | 16 |