Codes postaux 42XXX
- Code postal 42000 Saint-Étienne
- Code postal 42100 Saint-Étienne
- Code postal 42110 Feurs
- Code postal 42111 Saint-Didier-sur-Rochefort
- Code postal 42114 Chirassimont
- Code postal 42120 Le Coteau
- Code postal 42122 Saint-Marcel-de-Félines
- Code postal 42123 Cordelle
- Code postal 42130 Boën
- Code postal 42131 La Valla-en-Gier
- Code postal 42140 Chazelles-sur-Lyon
- Code postal 42150 La Ricamarie
- Code postal 42152 L'Horme
- Code postal 42153 Riorges
- Code postal 42155 Pouilly-les-Nonains
- Code postal 42160 Andrézieux-Bouthéon
- Code postal 42170 Saint-Just Saint-Rambert
- Code postal 42190 Charlieu
- Code postal 42210 Montrond-les-Bains
- Code postal 42220 Bourg-Argental
- Code postal 42230 Roche-la-Molière
- Code postal 42240 Unieux
- Code postal 42260 Saint-Germain-Laval
- Code postal 42270 Saint-Priest-en-Jarez
- Code postal 42290 Sorbiers
- Code postal 42300 Roanne
- Code postal 42310 La Pacaudière
- Code postal 42320 La Grand Croix
- Code postal 42330 Saint-Galmier
- Code postal 42340 Veauche
- Code postal 42350 La Talaudière
- Code postal 42360 Panissières
- Code postal 42370 Renaison
- Code postal 42380 Saint-Bonnet-le-Château
- Code postal 42390 Villars
- Code postal 42400 Saint-Chamond
- Code postal 42410 Pélussin
- Code postal 42420 Lorette
- Code postal 42430 Saint-Just-en-Chevalet
- Code postal 42440 Noirétable
- Code postal 42450 Sury-le-Comtal
- Code postal 42460 Cuinzier
- Code postal 42470 Saint-Symphorien-de-Lay
- Code postal 42480 La Fouillouse
- Code postal 42490 Fraisses
- Code postal 42500 Le Chambon Feugerolles
- Code postal 42510 Balbigny
- Code postal 42520 Maclas
- Code postal 42530 Saint-Genest-Lerpt
- Code postal 42540 Saint-Just-la-Pendue
- Code postal 42550 Usson-en-Forez
- Code postal 42560 Saint-Jean-Soleymieux
- Code postal 42570 Saint-Héand
- Code postal 42580 L'Étrat
- Code postal 42590 Neulise
- Code postal 42600 Montbrison
- Code postal 42610 Saint-Romain-le-Puy
- Code postal 42620 Saint-Martin-d'Estréaux
- Code postal 42630 Régny
- Code postal 42640 Saint-Germain-Lespinasse
- Code postal 42650 Saint-Jean-Bonnefonds
- Code postal 42660 Saint-Genest-Malifaux
- Code postal 42670 Belmont-de-la-Loire
- Code postal 42680 Saint-Marcellin-en-Forez
- Code postal 42700 Firminy
- Code postal 42720 Pouilly-sous-Charlieu
- Code postal 42740 Saint-Paul-en-Jarez
- Code postal 42750 Saint-Denis-de-Cabanne
- Code postal 42780 Violay
- Code postal 42800 Rive-de-Gier
- Code postal 42810 Rozier-en-Donzy
- Code postal 42820 Ambierle
- Code postal 42830 Saint-Priest-la-Prugne
- Code postal 42840 Montagny
- Code postal 42890 Sail-sous-Couzan
- Code postal 42920 Chalmazel
- Code postal 42940 Saint-Bonnet-le-Courreau
- Code postal 42990 Saint-Georges-en-Couzan