| Code | Libellé |
|---|---|
| 40001 | Aire-sur-l'Adour |
| 40002 | Amou |
| 40003 | Angoumé |
| 40004 | Angresse |
| 40005 | Arboucave |
| 40006 | Arengosse |
| 40007 | Argelos |
| 40008 | Argelouse |
| 40011 | Arsague |
| 40012 | Artassenx |
| 40013 | Arthez-d'Armagnac |
| 40014 | Arue |
| 40015 | Arx |
| 40016 | Aubagnan |
| 40017 | Audignon |
| 40018 | Audon |
| 40019 | Aureilhan |
| 40020 | Aurice |
| 40021 | Azur |
| 40022 | Bahus-Soubiran |
| 40023 | Baigts |
| 40024 | Banos |
| 40025 | Bascons |
| 40026 | Bas-Mauco |
| 40027 | Bassercles |
| 40028 | Bastennes |
| 40029 | Bats |
| 40030 | Baudignan |
| 40031 | Bégaar |
| 40032 | Belhade |
| 40033 | Bélis |
| 40034 | Bélus |
| 40035 | Bénesse-lès-Dax |
| 40036 | Bénesse-Maremne |
| 40037 | Benquet |
| 40038 | Bergouey |
| 40039 | Betbezer-d'Armagnac |
| 40040 | Beylongue |
| 40041 | Beyries |
| 40042 | Biarrotte |
| 40043 | Bias |
| 40044 | Biaudos |
| 40046 | Biscarrosse |
| 40047 | Bonnegarde |
| 40049 | Bordères-et-Lamensans |
| 40050 | Bostens |
| 40051 | Bougue |
| 40052 | Bourdalat |
| 40053 | Bourriot-Bergonce |
| 40054 | Brassempouy |