In this section you can find information about the towns included in the study
| Town | Dialects | Maps | Records |
| Belzunce | 0 | ||
| Beorburu | 7 | ||
| Bera | 56 | ||
| Beraiz | 0 | ||
| Beramendi | 6 | ||
| Berasáin | 5 | ||
| Beriáin | 2 | ||
| Berrioplano | 0 | ||
| Berriozar | 0 | ||
| Berroeta | 13 | ||
| Beruete | 24 | ||
| Betelu | 11 | ||
| Beunza | 11 | ||
| Beyrie-s.-Joyeuse | 2 | ||
| Bidarray | 23 | ||
| Bidaurreta | 0 | ||
| Biscay | 3 | ||
| Biurrun | 0 | ||
| Bizkarreta-Gerendiain | 1 | ||
| Bunus | 8 | ||
| Burgui | 1 | ||
| Burutain | 0 | ||
| Bussunarits-Sarrasquette | 2 | ||
| Bustince-Iriberry | 1 | ||
| Çaro | 2 | ||
| Cía | 0 | ||
| Ciáurriz | 2 | ||
| Ciganda | 0 | ||
| Cildoz | 0 | ||
| Cirauqui | 0 | ||
| Ciriza | 0 | ||
| Deikaztelu | 0 | ||
| Donamaria | 22 | ||
| Doneztebe/Santesteban | 13 | ||
| Dorrao/Torrano | 15 | ||
| Echarri | 0 | ||
| Egiarreta | 0 | ||
| Egozkue | 1 | ||
| Eguaras | 0 | ||
| Ekai | 0 | ||
| Elbete | 8 | ||
| Elcano | 6 | ||
| Elgorriaga | 12 | ||
| Elizondo | 37 | ||
| Eltso | 1 | ||
| Eltzaburu | 6 | ||
| Endériz | 0 | ||
| Enériz | 0 | ||
| Eraso | 7 | ||
| Eratsun | 116 |
