| Code | Name | Region |
|---|---|---|
| ISHRI | Hrisey | |
| ISHUS | Husavik - Hofn | |
| ISHVM | Hvammstangi | |
| ISHVE | Hveragerdi | |
| ISHVO | Hvolsvollur | |
| ISISA | Isafjordur - Hofn | |
| ISKEF | Keflavik | |
| ISKEV | Keflavikurkaupstadur | |
| ISKIR | Kirkjubajarklaustur | 8 |
| ISKOP | Kopasker - Hofn | |
| ISKOV | Kopavogur | |
| ISKRO | Krokfjardarnes | |
| ISLAN | Landeyjahofn | 8 |
| ISLSA | Litli Sandur | |
| ISDRA | Drangsnes | |
| ISEGS | Egilsstadir | |
| ISESK | Eskifjordur - Hofn | |
| ISEFJ | Eskifjordur Apt | |
| ISFAG | Fagurholsmyri | |
| ISFAS | Faskrudsfjordur | |
| ISFEY | Flatey | 3 |
| ISFLA | Flateyri | |
| ISFLI | Flateyri Apt | |
| ISGRB | Gardabaer | |
| ISGRD | Gardur | |
| ISGJR | Gjogur | |
| ISGRE | Grenivik | |
| ISGRY | Grimsey | |
| ISGRI | Grindavik | |
| ISGRF | Grundarfjordur | |
| ISGRT | Grundartangi | |
| ISGUF | Gufunes/reykjavik | |
| ISHAF | Hafnarfjordur | |
| ISHNR | Hafnir | |
| IS | ||
| ISAKR | Akranes | |
| ISAKU | Akureyri | |
| ISAEY | Akureyri Apt | |
| ISASS | Arskogssandur | |
| ISBAK | Bakkafjordur | |
| ISBIL | Bildudalur - Hofn | |
| ISBIU | Bildudalur Apt | |
| ISBLO | Blonduos | |
| ISBOL | Bolungarvik | |
| ISBOI | Bordeyri | |
| ISBGJ | Borgarfjordur Eystri | |
| ISBOR | Borgarnes | |
| ISBRE | Breiddalsvik | |
| ISBRJ | Brjanslakur | 3 |
| ISBUD | Budardalur | 3 |