| Callary St, Tullamore | — | 10 |
| Camcor House, Railway Rd | €128,500 | 9 |
| Cangort Park, Shinrone | — | 5 |
| Cappagh Grove, Ballinagar | €218,500 | 23 |
| Cappaneale, Birr | €133,000 | 9 |
| Cappaneale Park, Birr | — | 5 |
| Cappaneale Place, Banagher Road | — | 14 |
| Cappincur, Tullamore | €477,000 | 15 |
| Carraig Aoibhinn, Carrick Rd | — | 5 |
| Carraig Aoibhinn, Edenderry | — | 5 |
| Carraig Cluain, Clara Road | €237,000 | 29 |
| Carraig Cluain, Tullamore | €261,500 | 45 |
| Carraig Ean, Edenderry | €199,000 | 42 |
| carrick esker, edenderry | — | 6 |
| Carrick Hall Lane, Edenderry | — | 5 |
| carrick road, edenderry | — | 7 |
| Carrick Vale, Edenderry | €271,250 | 11 |
| Carrickhall, Carrick Road | — | 7 |
| Carrickhall Close, Edenderry | €175,000 | 16 |
| Carrickhall Lane, Edenderry | €222,500 | 17 |
| Carrig Cluain, Tullamore | — | 10 |
| Carrig Ean, Edenderry | — | 5 |
| castle court, birr | — | 9 |
| Castle Court, Shinrone | €166,000 | 12 |
| Castle Street, Birr | — | 7 |
| Castle Street, Cloghan | — | 10 |
| Castlekealy Lawns, Daingean | €155,000 | 12 |
| Castletown, Kinnitty | — | 7 |
| Castleview Park, Edenderry | €185,500 | 12 |
| Cedar Lawns, Edenderry | — | 10 |
| Cedar Lawns, St Mary's Road | — | 14 |
| Chancery Lane, Tullamore | — | 8 |
| Chancery Park Court, Tullamore | — | 6 |
| Chancery Park Downs, Tullamore | €230,000 | 9 |
| Chancery Park Drive, Tullamore | — | 5 |
| Chancery Park Gardens, Tullamore | — | 5 |
| Chancery Park Grove, Tullamore | — | 5 |
| Chancery Park PLace, Tullamore | — | 6 |
| Chancery Park Rd, Tullamore | €235,000 | 22 |
| Chancery Park Rise, Tullamore | — | 10 |
| Chancery Park Road, Cloncollig | — | 6 |
| Chancery Park Way, Tullamore | €238,000 | 9 |
| Chapel Street, Tullamore | €156,000 | 20 |
| Charleville Road, Tullamore | €340,000 | 15 |
| Charleville View, Tullamore | €355,000 | 14 |
| Church Hill, Hophill Road | — | 28 |
| Church Hill, Tullamore | €169,000 | 56 |
| Church Rd, Clara | — | 6 |
| Church Road, Tullamore | — | 7 |
| Church Street, Birr | — | 5 |
| Church Street, Clara | €95,000 | 11 |
| Church Street, Tullamore | — | 38 |
| Church View Church Road, Tullamore | — | 7 |
| Churchill, Tullamore | €191,750 | 12 |
| Churchview Heights, Edenderry | — | 6 |
| Cill Ban, Collins Lane | €207,500 | 17 |
| Cill Ban, Tullamore | €225,000 | 7 |
| Clara Road, Tullamore | €267,500 | 20 |
| Clonbullogue, Tullamore | — | 6 |
| Cloncollig, Tullamore | — | 9 |
| Cloneygowan, Tullamore | €112,500 | 11 |
| Cloneyhurke, Portarlington | — | 8 |
| Clonmeen Rise, Edenderry | — | 34 |
| Clonminch, Tullamore | €327,000 | 9 |
| Clonminch Avenue, Tullamore | — | 12 |
| Clonminch Road, Tullamore | — | 10 |
| Clonminch Wood, Clonminch | — | 6 |
| Clonminch Wood, Tullamore | €246,500 | 73 |
| Clonmore, Ballinagar | — | 6 |
| Clonmore, Edenderry | €255,000 | 8 |
| Clonmore, Rhode | — | 10 |
| Clonmore, Tullamore | — | 9 |
| Clonmullen, Edenderry | — | 8 |
| Clonmullen Hall, Edenderry | €159,500 | 21 |
| Clonoghill, Birr | — | 5 |
| Clonoghill Lower, Birr | — | 5 |
| Clonoghill Upper, Birr | — | 5 |
| Clonowan, Ballyboy Road | — | 5 |
| Clonsast Lower, Bracknagh | — | 7 |
| Clontarf Road, Tullamore | €175,000 | 28 |
| Cloughjordan Road, Moneygall | — | 5 |
| Cluain Abhainn, Tullamore Road | — | 17 |
| Cluain Fia, Curragh Rd | — | 6 |
| Cluain na Greine, Cloneygowan | €250,000 | 40 |
| Cluain na Spideoga, Cloghan | — | 12 |
| Cois Na Habhainn, Ferbane | — | 14 |
| College View, Rahan | — | 6 |
| Colliers Brook, Tullamore | €212,500 | 14 |
| Collins Lane, Ridley Place | €290,749 | 6 |
| Collinstown, Clara | — | 7 |
| Colmcille Road, Edenderry | — | 7 |
| Connaught Street, Birr | €178,489 | 9 |
| Connolly Park, Tullamore | — | 5 |
| Convent View, Tullamore | — | 8 |
| Coolagarry, Walsh Island | €190,000 | 22 |
| Coolagary, Walsh Island | €160,000 | 7 |
| Coolcor, Rhode | — | 6 |
| Cormac Street, Tullamore | €210,000 | 8 |
| Corr Na Meala, Birr | — | 8 |
| Corr Na Meala, Hillside | €251,101 | 17 |
| Cuba Avenue, Banagher | — | 17 |
| Curragh Hill, Ballinagar | €220,000 | 14 |
| Cushina, Portarlington | — | 11 |
| The Crescent, Birr | — | 5 |
| The Crescent, The Hawthorns | €224,670 | 12 |