| Lorient Cedex (56101) | - | - |
| Lorient Cedex (56102) | - | - |
| Lorient Cedex (56103) | - | - |
| Lorient Cedex (56104) | - | - |
| Lorient Cedex (56105) | - | - |
| Lorient Cedex (56106) | - | - |
| Lorient Cedex (56107) | - | - |
| Lorient Cedex (56108) | - | - |
| Lorient Cedex (56109) | - | - |
| Lorient Naval (56998) | - | - |
| Loyat (56800) | - | - |
| Malansac (56220) | - | - |
| Malestroit (56140) | - | - |
| Malguenac (56300) | - | - |
| Marzan (56130) | - | - |
| Mauron (56430) | - | - |
| Melrand (56310) | - | - |
| Meneac (56490) | - | - |
| Merlevenez (56700) | - | - |
| Meslan (56320) | - | - |
| Meucon (56890) | - | - |
| Missiriac (56140) | - | - |
| Mohon (56490) | - | - |
| Molac (56230) | - | - |
| Monteneuf (56380) | - | - |
| Monterblanc (56250) | - | - |
| Monterrein (56800) | - | - |
| Montertelot (56800) | - | - |
| Moreac (56500) | - | - |
| Moustoir Ac (56500) | - | - |
| Moustoir Remungol (56810) | - | - |
| Moustoir Remungol (56500) | - | - |
| Muzillac (56190) | - | - |
| Naizin (56500) | - | - |
| Neant Sur Yvel (56820) | - | - |
| Neant Sur Yvel (56430) | - | - |
| Neulliac (56300) | - | - |
| Nivillac (56130) | - | - |
| Nostang (56690) | - | - |
| Noyal Muzillac (56190) | - | - |
| Noyal Pontivy (56920) | - | - |
| Noyalo (56450) | - | - |
| Peaule (56130) | - | - |
| Peillac (56220) | - | - |
| Penestin (56760) | - | - |
| Persquen (56160) | - | - |
| Plaudren (56420) | - | - |
| Plescop (56890) | - | - |
| Pleucadeuc (56140) | - | - |
| Pleugriffet (56120) | - | - |
| Ploemel (56400) | - | - |
| Ploemeur (56270) | - | - |
| Ploerdut (56160) | - | - |
| Ploeren (56880) | - | - |
| Ploermel (56800) | - | - |
| Ploermel Cedex (56801) | - | - |
| Ploermel Cedex (56802) | - | - |
| Ploermel Cedex (56803) | - | - |
| Ploermel Cedex (56804) | - | - |
| Ploermel Cedex (56805) | - | - |
| Ploermel Cedex (56806) | - | - |
| Ploermel Cedex (56807) | - | - |
| Ploermel Cedex (56808) | - | - |
| Ploermel Cedex (56809) | - | - |
| Plouay (56240) | - | - |
| Plougoumelen (56400) | - | - |
| Plouharnel (56340) | - | - |
| Plouharnel (56720) | - | - |
| Plouhinec (56680) | - | - |
| Plouray (56770) | - | - |
| Pluherlin (56220) | - | - |
| Plumelec (56420) | - | - |
| Plumeliau (56930) | - | - |
| Plumelin (56500) | - | - |
| Plumergat (56400) | - | - |
| Pluneret (56400) | - | - |
| Pluvigner (56330) | - | - |
| Pont Scorff (56620) | - | - |
| Pontivy (56300) | - | - |
| Pontivy Cedex (56307) | - | - |
| Pontivy Cedex (56308) | - | - |
| Pontivy Cedex (56309) | - | - |
| Pontivy Cedex (56301) | - | - |
| Pontivy Cedex (56302) | - | - |
| Pontivy Cedex (56303) | - | - |
| Pontivy Cedex (56304) | - | - |
| Pontivy Cedex (56305) | - | - |
| Pontivy Cedex (56306) | - | - |
| Porcaro (56380) | - | - |
| Port Louis (56290) | - | - |
| Port Navalo (56640) | - | - |
| Priziac (56320) | - | - |
| Quelneuc (56910) | - | - |
| Questembert (56230) | - | - |
| Queven (56530) | - | - |
| Quiberon (56170) | - | - |
| Quily (56800) | - | - |
| Quistinic (56310) | - | - |
| Radenac (56500) | - | - |
| Reguiny (56500) | - | - |