Postcode areas 53XXX
- Postcode area 53000 Laval
- Postcode area 53100 Mayenne
- Postcode area 53110 Lassay-les-Châteaux
- Postcode area 53120 Gorron
- Postcode area 53140 Pré-en-Pail
- Postcode area 53150 Montsûrs
- Postcode area 53160 Bais
- Postcode area 53170 Meslay-du-Maine
- Postcode area 53190 Fougerolles-du-Plessis
- Postcode area 53200 Château-Gontier
- Postcode area 53210 Argentré
- Postcode area 53220 Montaudin
- Postcode area 53230 Cossé-le-Vivien
- Postcode area 53240 Andouillé
- Postcode area 53250 Javron-les-Chapelles
- Postcode area 53260 Entrammes
- Postcode area 53270 Sainte-Suzanne
- Postcode area 53290 Grez-en-Bouère
- Postcode area 53300 Ambrières-les-Vallées
- Postcode area 53320 Loiron
- Postcode area 53340 Ballée
- Postcode area 53350 Ballots
- Postcode area 53360 Quelaines-Saint-Gault
- Postcode area 53370 Saint-Pierre-des-Nids
- Postcode area 53380 Juvigné
- Postcode area 53390 Saint-Aignan-sur-Roë
- Postcode area 53400 Craon
- Postcode area 53410 Port-Brillet
- Postcode area 53420 Chailland
- Postcode area 53440 Aron
- Postcode area 53470 Martigné-sur-Mayenne
- Postcode area 53480 Vaiges
- Postcode area 53500 Ernée
- Postcode area 53540 Cuillé
- Postcode area 53600 Évron
- Postcode area 53640 Le Horps
- Postcode area 53700 Villaines-la-Juhel
- Postcode area 53800 Renazé
- Postcode area 53810 Change
- Postcode area 53940 Saint-Berthevin
- Postcode area 53950 Louverné
- Postcode area 53960 Bonchamp-lès-Laval
- Postcode area 53970 L'Huisserie