In this section you can find information about the towns included in the study
| Town | Dialects | Maps | Records |
| Goldaratz | 16 | ||
| Goñi | 0 | ||
| Gorraiz de Arce | 0 | ||
| Gorriti | 3 | ||
| Gorrontz-Olano | 2 | ||
| Guelbenzu | 3 | ||
| Guenduláin | 1 | ||
| Güesa | 0 | ||
| Guipúzcoa | 14 | ||
| Guipúzcoa (high navarrese-central) | 4 | ||
| Guipúzcoa (biscayan-west) | 7 | ||
| Guirguillano | 0 | ||
| Gulina | 0 | ||
| Gurpegui | 0 | ||
| Hélette | 12 | ||
| Hiriberri/Villanueva (Arakil) | 0 | ||
| Hiriberri/Villanueva de Aezkoa | 157 | ||
| Hosta | 1 | ||
| Ibarrolle | 5 | ||
| Ibilcieta | 0 | ||
| Iciz | 0 | ||
| Idoi | 2 | ||
| Igal | 0 | ||
| Igantzi | 40 | ||
| Igoa | 35 | ||
| Igúzquiza | 0 | ||
| Ihabar | 4 | ||
| Ihaben | 3 | ||
| Iholdy | 8 | ||
| Ilarratz | 1 | ||
| Ilarregi | 13 | ||
| Ilharre | 2 | ||
| Ilurdotz | 1 | ||
| Imízcoz | 0 | ||
| Inbuluzketa | 1 | ||
| Intza | 12 | ||
| Iragi | 6 | ||
| Iraizotz | 9 | ||
| Irañeta | 12 | ||
| Iribas | 7 | ||
| Irissarry | 7 | ||
| Irotz | 1 | ||
| Irouléguy | 3 | ||
| Irure | 1 | ||
| Irurita | 17 | ||
| Irurozqui (Urraúl Alto) | 0 | ||
| Irurtzun | 2 | ||
| Isaba | 6 | ||
| Ispoure | 4 | ||
| Isturits | 5 |
