Key code and names for the Ireland counties mapline
| KEY | name | hc-key | alt-name | hc-a2 |
| IE-G | Galway | IE-G | Gaillimh | GA |
| IE-MO | Mayo | IE-MO | Maigh Eo | MO |
| IE-KY | Kerry | IE-KY | Ciarraí | KY |
| IE-DL | Donegal | IE-DL | Dún na nGall|Tyrconnel | DL |
| IE-CO | Cork | IE-CO | Corcaigh | CO |
| IE-CE | Clare | IE-CE | An Clár | CE |
| IE-D | Dublin | IE-D | Baile Átha Cliath | DU |
| IE-LD | Longford | IE-LD | An Longfort | LD |
| IE-CN | Cavan | IE-CN | An Cabhán | CN |
| IE-WD | Waterford | IE-WD | Port Láirge | WA |
| IE-MN | Monaghan | IE-MN | null | MN |
| IE-TA | Tipperary | IE-TA | Tiobraid Árann | TA |
| IE-LH | Louth | IE-LH | Lú | LH |
| IE-MH | Meath | IE-MH | An Mhí | MH |
| IE-OY | Offaly | IE-OY | Uíbh Fhailí|Kings | OY |
| IE-WH | Westmeath | IE-WH | An Iarmhí | WH |
| IE-WX | Wexford | IE-WX | Loch Garman | WX |
| IE-CW | Carlow | IE-CW | Ceatharlach | CW |
| IE-WW | Wicklow | IE-WW | Cill Mhantáin | WW |
| IE-KE | Kildare | IE-KE | Cill Dara | KE |
| IE-KK | Kilkenny | IE-KK | Cill Chainnigh | KK |
| IE-LS | Laoighis | IE-LS | Laois|Leix|Queens | LS |
| IE-LK | Limerick | IE-LK | Luimneach | LI |
| IE-RN | Roscommon | IE-RN | Ros Comáin | RN |
| IE-SO | Sligo | IE-SO | Sligeach | SO |
| IE-LM | Leitrim | IE-LM | Liatroim | LM |