Postcode areas 56XXX
- Postcode area 56000 Vannes
- Postcode area 56100 Lorient
- Postcode area 56110 Gourin
- Postcode area 56120 Josselin
- Postcode area 56130 La Roche Bernard
- Postcode area 56140 Malestroit
- Postcode area 56150 Baud
- Postcode area 56160 Guémené-sur-Scorff
- Postcode area 56170 Quiberon
- Postcode area 56190 Muzillac
- Postcode area 56200 La Gacilly
- Postcode area 56220 Malansac
- Postcode area 56230 Questembert
- Postcode area 56240 Plouay
- Postcode area 56250 Elven
- Postcode area 56260 Larmor-Plage
- Postcode area 56270 Ploemeur
- Postcode area 56290 Port-Louis
- Postcode area 56300 Pontivy
- Postcode area 56310 Bubry
- Postcode area 56320 Le Faouët
- Postcode area 56330 Pluvigner
- Postcode area 56340 Carnac
- Postcode area 56350 Allaire
- Postcode area 56360 Le Palais
- Postcode area 56370 Sarzeau
- Postcode area 56380 Guer
- Postcode area 56390 Grand-Champ
- Postcode area 56400 Auray
- Postcode area 56410 Erdeven
- Postcode area 56420 Plumelec
- Postcode area 56430 Mauron
- Postcode area 56440 Languidic
- Postcode area 56450 Theix
- Postcode area 56460 Sérent
- Postcode area 56470 La Trinité-sur-Mer
- Postcode area 56480 Cléguérec
- Postcode area 56490 Guilliers
- Postcode area 56500 Locminé
- Postcode area 56510 Saint-Pierre-Quiberon
- Postcode area 56520 Guidel
- Postcode area 56530 Quéven
- Postcode area 56540 Le Croisty
- Postcode area 56550 Belz
- Postcode area 56560 Guiscriff
- Postcode area 56570 Locmiquélic
- Postcode area 56580 Rohan
- Postcode area 56590 Groix
- Postcode area 56600 Lanester
- Postcode area 56610 Arradon
- Postcode area 56620 Pont-Scorff
- Postcode area 56630 Langonnet
- Postcode area 56640 Arzon
- Postcode area 56650 Inzinzac-Lochrist
- Postcode area 56660 Saint-Jean-Brévelay
- Postcode area 56670 Riantec
- Postcode area 56680 Plouhinec
- Postcode area 56690 Landévant
- Postcode area 56700 Hennebont
- Postcode area 56730 Saint-Gildas-de-Rhuys
- Postcode area 56740 Locmariaquer
- Postcode area 56750 Damgan
- Postcode area 56760 Pénestin
- Postcode area 56770 Plouray
- Postcode area 56780 Île-aux-Moines
- Postcode area 56800 Ploërmel
- Postcode area 56840 Île-d'Arz
- Postcode area 56850 Caudan
- Postcode area 56860 Séné
- Postcode area 56870 Baden
- Postcode area 56880 Ploeren
- Postcode area 56890 Saint-Avé
- Postcode area 56910 Carentoir
- Postcode area 56920 Noyal-Pontivy
- Postcode area 56930 Pluméliau
- Postcode area 56950 Crach