| Cairlinn, Ghan Rd | €280,000 | 12 |
| Cairnes Court, Roschoill | €346,000 | 12 |
| Callystown, Clogherhead | — | 10 |
| Campbells Park, Ardee | €153,000 | 14 |
| Caraban, Ravensdale | — | 5 |
| Carlinn Avenue, Mullaharlin Road | — | 20 |
| Carlinn Court, Mullaharlin Road | €288,000 | 29 |
| Carlinn Drive, Mullaharlin Road | — | 25 |
| Carlinn Gardens, Mullaharlin Road | — | 24 |
| Carlinn Green, Mullaharlin Road | — | 20 |
| Carlinn Hall, Mullaharlin Road | — | 26 |
| Carlinn Heath, Mullaharlin Road | — | 16 |
| Carmelite Cottages, Marsh Road | — | 5 |
| Carraig Mor, Seafield Road | €702,643 | 8 |
| Carrick Road, Dundalk | — | 5 |
| Carroll Village, Dundalk | €140,000 | 14 |
| Carrolls Village, Long Walk | €165,000 | 6 |
| Cashlainn, Haynestown | €280,000 | 5 |
| Castle Manor, Ballymakenny Road | — | 8 |
| Castle Manor, Drogheda | — | 5 |
| Castle Park, Dundalk | — | 6 |
| Castle Park, Termonfeckin | — | 53 |
| Castle Road, Dundalk | €325,000 | 23 |
| Castleguard Manor, Ardee | — | 102 |
| Castlemanor, Ballymakenny Road | €280,000 | 17 |
| Castlepark, Termonfeckin | — | 10 |
| Castleross, Castletown Road | €157,500 | 38 |
| Castleross, Dundalk | €220,000 | 15 |
| Castletown Road, Dundalk | €182,500 | 46 |
| Castlewood, Drogheda | — | 6 |
| Castlewood, Dublin Road | €390,000 | 17 |
| Cathedral View, Rampart Road | €233,480 | 22 |
| Cedarfield, Donore Road | €225,000 | 30 |
| Cedarfield, Drogheda | €278,000 | 23 |
| Cedarfield Close, Donore Rd | €227,500 | 10 |
| Cedarfield Close, Drogheda | — | 8 |
| Cedarwood Park, Dundalk | €145,000 | 21 |
| Central Ave, Parnell Park | — | 6 |
| Chapel Hill, Carlingford | — | 8 |
| Chapel Hill, Clogherhead | — | 6 |
| Chapel Hill, Knocknagoran | — | 6 |
| Chapel Road, Clogherhead | — | 8 |
| Chapel Street, Dundalk | €162,000 | 35 |
| Chapel View, Louth Village | — | 5 |
| Charlestown, Tallanstown | — | 6 |
| Charleville, Dunleer | €170,000 | 9 |
| Cherrybrook, Ardee | €225,000 | 30 |
| Cherrybrook Dr, Drogheda | €293,500 | 13 |
| Cherrymount Court, Donore Rd | — | 5 |
| Cherryvale, Bay Estate | €245,000 | 24 |
| Cherrywood Close, Termon Abbey | €248,000 | 13 |
| Cherrywood Dr, Termonabbey | — | 8 |
| Cherrywood Drive, Termon Abbey | €245,000 | 33 |
| Cherrywood Park, Tallanstown | — | 7 |
| Chestnut Grove, Termon Abbey | — | 6 |
| Chestnut Grove, Wheaton Hall | — | 6 |
| Chord Road, Drogheda | €193,000 | 32 |
| Chuirt Naomh Mhuire, Louth Village | — | 9 |
| Church Street, Drogheda | €208,000 | 9 |
| Church View, Dromiskin | — | 9 |
| Clanbrassil St, Dundalk | €100,000 | 12 |
| Clermont Manor, Blackrock | €331,000 | 14 |
| Cloghanvary, Ardee | — | 5 |
| Cloghanvary, John Street | — | 8 |
| Clogher Cove, Clogherhead | — | 11 |
| Clois Dealga, Saltown | — | 10 |
| Cloneen Drive, Ard Easmuinn | — | 9 |
| Clonmore, Ardee | €209,500 | 14 |
| Clonmore, Hale St | €210,000 | 42 |
| Clonmore, Togher | — | 7 |
| Clonmore Hale St, Ardee | — | 6 |
| Cloonanna, Knockbridge | — | 5 |
| Clos Aodhan, Saltown | €161,000 | 12 |
| Clos Brid, Saltown | — | 7 |
| Clos Cormac, Saltown | — | 8 |
| Clos Dealga, Saltown | — | 10 |
| Clos Emer, Saltown | €233,479 | 30 |
| Cloughanvary, Ardee | — | 5 |
| Cloughanvary, John St | — | 15 |
| Cluain Ard, Lis Na Dara | €295,000 | 15 |
| Cluain Fhada, Lis na Dara | €343,612 | 9 |
| Cluain na Mara, Omeath | — | 12 |
| Cluan Ard, Lis na Dara | — | 5 |
| Cluan Enda, Dundalk | €231,500 | 22 |
| Cluan Fada, Lis Na Dara | — | 12 |
| Coach House, Bachelors Lane | — | 7 |
| Cois Abhainn, Jervis Street | — | 5 |
| Cois Croinn, Saltown | €148,500 | 23 |
| Cois Cuain, Upper Point Road | — | 20 |
| Cois Cuan, Upper Point Road | — | 8 |
| Cois Farraige, Blackrock | €334,802 | 95 |
| Cois Farraige, Old Golf Links Road | €355,000 | 13 |
| College Heights, Dundalk | — | 9 |
| College Heights, Hoeys Lane | €176,000 | 28 |
| College Manor, Dundalk | €206,000 | 21 |
| College Manor, Hoey's Lane | €220,000 | 67 |
| College Rise, Drogheda | €245,000 | 28 |
| Commons Cross, Dromiskin | — | 5 |
| Commons Grove, Dromiskin | — | 10 |
| Commons Road, Dromiskin | — | 18 |
| Congress Avenue, Drogheda | €216,000 | 24 |
| Cookstown, Ardee | €320,000 | 10 |
| Cooley Park, Dundalk | €147,500 | 13 |
| Coolfore, Monasterboice | — | 5 |
| Coopers Cross, Castlebellingham | — | 6 |
| cord road, drogheda | €227,500 | 28 |
| Cornamucklagh, Omeath | — | 8 |
| Cortial, Kilkerley | — | 5 |
| Crann Mor, Clogherhead | — | 5 |
| Crann Mor Cove, Clogherhead | — | 8 |
| Crescent View, Castlebellingham | — | 5 |
| Creveen Terrace, North Road | — | 5 |
| Crossabeagh, Knockbridge | — | 8 |
| Crushrod Avenue, Drogheda | €250,000 | 11 |
| Cuchulainn Heights, Carlingford | €259,912 | 58 |
| cuchullain terrace, Dundalk | — | 5 |
| Culhane St, Dundalk | €216,250 | 21 |
| Cypress Gardens, Bay Estate | €261,000 | 16 |
| The Cairns, Beaubec | — | 5 |
| The Cedars, Avourwen | — | 7 |
| The Cedars, Avourwen Meadows | — | 7 |
| The Chesters, Termonfeckin Road | €370,043 | 19 |
| The Cloisters, Collon | — | 11 |
| The Close, Lennonstown Manor | €233,123 | 5 |
| The Close, Mount Hamilton | — | 29 |
| The Cornstore, Constitution Hill | — | 6 |
| The Cottages, Baltray | — | 6 |
| The Court, Martello Village | — | 6 |
| The Courtyard, Main St | — | 9 |
| The Courtyard, Marsh Road | — | 8 |
| The Courtyard, Mount Hamilton | — | 11 |
| The Courtyard, Mounthamilton | — | 5 |
| The Crescent, Dundalk | — | 5 |
| The Crescent, Lennonstown Manor | — | 11 |