| Code | Name | Region |
|---|---|---|
| IEHOH | Holly Hill | CO |
| IEHYS | Hollystown | D |
| IEHOL | Holywood | CW |
| IEHOW | Howth | |
| IEINS | Inishannon (inis Eonain) | CO |
| IEINQ | Inisheer | |
| IEIIA | Inishmaan | |
| IEIOR | Inishmore | |
| IEINV | Inveran | |
| IEIRD | Irish Rail Freight Depot | |
| IEJMT | Jamestown | LM |
| IEJTD | Johnstown | MH |
| IEJUL | Julianstown | MH |
| IEKNT | Kanturk | |
| IEKLL | Kells | MH |
| IECHK | Frenchpark | RN |
| IEFSF | Freshford | KK |
| IEGMY | Galmoy | KK |
| IEGWY | Galway | |
| IEGLG | Gilloge | CE |
| IEGLM | Glanmire | CO |
| IEGNV | Glasnevin | D |
| IEGMD | Glenamaddy | G |
| IEGBI | Glenbeigh | KY |
| IEGGA | Glengarriff | CO |
| IEIGE | Goresbridge | KK |
| IEGOR | Gorey | WX |
| IEGON | Gormanston | MH |
| IEGOT | Gort | G |
| IEGRT | Gortahork | DL |
| IEGOW | Gowran | |
| IEKKG | Graiguenamanagh | KK |
| IEGGG | Grangegeeth | MH |
| IEGNA | Grannagh | WD |
| IEGRE | Greencastle | DL |
| IEEFD | Enfield | MH |
| IEENI | Ennis | |
| IEENN | Enniscorthy | |
| IEENK | Enniskean | CO |
| IEDWE | Ennistymon | CE |
| IEESB | Esb Poolbeg-dublin | D |
| IEFFO | Farranfore | |
| IEFEN | Fenit | KY |
| IEFBE | Ferbane | OY |
| IEFER | Fermoy | |
| IEFEB | Ferrybank | WD |
| IEFTD | Fethard/slade | TA |
| IEFID | Fiddown | |
| IEFLS | Finglas | D |
| IEFIN | Fintona |