1851 townland index for Co. Carlow based on Roman Catholic parish records.
| Placename | Townland_directory | Parish | County |
|---|---|---|---|
| Rathellon | Rathellin | Agha | Carlow |
| Leighlin Bridge | - | Agha or Wells | Carlow |
| Ln Bridge | - | Agha or Wells | Carlow |
| Ardristan | Ardristan | Ardristan | Carlow |
| B. Carry | Ballycarney | Ballinacarrig | Carlow |
| Ballycarnee | Ballycarney | Ballinacarrig | Carlow |
| Ballycarney | Ballycarney | Ballinacarrig | Carlow |
| Ballycarny | Ballycarney | Ballinacarrig | Carlow |
| BeneKerry | Bennekerry | Ballinacarrig | Carlow |
| Kilmeany | Kilmeany | Ballinacarrig | Carlow |
| Park | Park | Ballinacarrig | Carlow |
| Staplestown | Staplestown | Ballinacarrig | Carlow |
| Ballinvally | Ballinvally | Ballon | Carlow |
| Ballon | Ballon | Ballon | Carlow |
| Ballon Hill | - | Ballon | Carlow |
| Ballykeean | Ballyleen | Ballon | Carlow |
| Ballyleean | Ballyleen | Ballon | Carlow |
| Ballymogue | Ballymogue | Ballon | Carlow |
| Cappa | Cappagh | Ballon | Carlow |
| Laragh | Larah | Ballon | Carlow |
| Sraugh | Sragh | Ballon | Carlow |
| ?oneleny | Carrigslaney | Ballon or Aghade | Carlow |
| Caric | Carrickslaney | Ballon or Aghade | Carlow |
| Carric | Carrickslaney | Ballon or Aghade | Carlow |
| Carricleany | Carrickslaney | Ballon or Aghade | Carlow |
| Castlegrace | Castlegrace | Ballon or Aghade | Carlow |
| Ballycroag | Ballycrogue | Ballycrogue | Carlow |
| Bendenstown | Bendinstown | Ballyellin | Carlow |
| Ballinakeenan | - | Barragh | Carlow |
| Ballinshancarra | - | Barragh | Carlow |
| Ballinvally | - | Barragh | Carlow |
| Ballykeenan | - | Barragh | Carlow |
| Ballypierce | - | Barragh | Carlow |
| Barnahask | - | Barragh | Carlow |
| Barragh | - | Barragh | Carlow |
| Carrigduff | - | Barragh | Carlow |
| Craan | - | Barragh | Carlow |
| Crane | - | Barragh | Carlow |
| Cranemore | - | Barragh | Carlow |
| Crowsgrove | - | Barragh | Carlow |
| Deerpark | - | Barragh | Carlow |
| Kilbranish | - | Barragh | Carlow |
| Kilbride | - | Barragh | Carlow |
| Kildavin | - | Barragh | Carlow |
| Lacabeg | - | Barragh | Carlow |
| Mortlestown | Mortarstown | Carlow | Carlow |
| Pollerton | Pollerton | Carlow | Carlow |
| B. Bar | Ballybar | Clonmelch | Carlow |
| Ballybar | Ballybar | Clonmelch | Carlow |
| Clonmelch | Clonmelsh | Clonmelsh | Carlow |