| Postal Code | Place Name | Region | Department | Arrondissement | Canton |
|---|---|---|---|---|---|
| 03000 | Moulins | Auvergne-Rhône-Alpes | Allier | Moulins | Moulins-1 |
| 03100 | Montluçon | Auvergne-Rhône-Alpes | Allier | Montluçon | Montluçon |
| 03110 | Saint-Rémy-en-Rollat | Auvergne-Rhône-Alpes | Allier | Vichy | Bellerive-sur-Allier |
| 03120 | Lapalisse | Auvergne-Rhône-Alpes | Allier | Vichy | Lapalisse |
| 03130 | Le Donjon | Auvergne-Rhône-Alpes | Allier | Vichy | Dompierre-sur-Besbre |
| 03140 | Chantelle | Auvergne-Rhône-Alpes | Allier | Moulins | Gannat |
| 03150 | Varennes-sur-Allier | Auvergne-Rhône-Alpes | Allier | Vichy | Saint-Pourçain-sur-Sioule |
| 03160 | Bourbon-l'Archambault | Auvergne-Rhône-Alpes | Allier | Moulins | Bourbon-l'Archambault |
| 03170 | Doyet | Auvergne-Rhône-Alpes | Allier | Montluçon | Commentry |
| 03200 | Vichy | Auvergne-Rhône-Alpes | Allier | Vichy | Lapalisse |
| 03210 | Souvigny | Auvergne-Rhône-Alpes | Allier | Moulins | Souvigny |
| 03220 | Saint-Léon | Auvergne-Rhône-Alpes | Allier | Vichy | Moulins-2 |
| 03230 | Beaulon | Auvergne-Rhône-Alpes | Allier | Moulins | Dompierre-sur-Besbre |
| 03240 | Tronget | Auvergne-Rhône-Alpes | Allier | Moulins | Souvigny |
| 03250 | Le Mayet-de-Montagne | Auvergne-Rhône-Alpes | Allier | Vichy | Lapalisse |
| 03260 | Saint-Germain-des-Fossés | Auvergne-Rhône-Alpes | Allier | Vichy | Saint-Pourçain-sur-Sioule |
| 03270 | Saint-Yorre | Auvergne-Rhône-Alpes | Allier | Vichy | Lapalisse |
| 03290 | Dompierre-sur-Besbre | Auvergne-Rhône-Alpes | Allier | Moulins | Dompierre-sur-Besbre |
| 03310 | Néris-les-Bains | Auvergne-Rhône-Alpes | Allier | Montluçon | Montluçon-3 |
| 03320 | Lurcy-Lévis | Auvergne-Rhône-Alpes | Allier | Moulins | Bourbon-l'Archambault |
| 03330 | Bellenaves | Auvergne-Rhône-Alpes | Allier | Montluçon | Gannat |
| 03340 | Neuilly-le-Réal | Auvergne-Rhône-Alpes | Allier | Moulins | Moulins-2 |
| 03350 | Cérilly | Auvergne-Rhône-Alpes | Allier | Montluçon | Bourbon-l'Archambault |
| 03360 | Meaulne | Auvergne-Rhône-Alpes | Allier | Montluçon | Bourbon-l'Archambault |
| 03370 | Viplaix | Auvergne-Rhône-Alpes | Allier | Montluçon | Huriel |
| 03380 | Huriel | Auvergne-Rhône-Alpes | Allier | Montluçon | Huriel |
| 03390 | Montmarault | Auvergne-Rhône-Alpes | Allier | Montluçon | Commentry |
| 03410 | Domérat | Auvergne-Rhône-Alpes | Allier | Montluçon | Montluçon-4 |
| 03420 | Marcillat-en-Combraille | Auvergne-Rhône-Alpes | Allier | Montluçon | Montluçon-3 |
| 03430 | Cosne-d'Allier | Auvergne-Rhône-Alpes | Allier | Montluçon | Huriel |
| 03440 | Buxières-les-Mines | Auvergne-Rhône-Alpes | Allier | Moulins | Bourbon-l'Archambault |
| 03450 | Ébreuil | Auvergne-Rhône-Alpes | Allier | Montluçon | Gannat |
| 03460 | Trévol | Auvergne-Rhône-Alpes | Allier | Moulins | Yzeure |
| 03470 | Pierrefitte-sur-Loire | Auvergne-Rhône-Alpes | Allier | Moulins | Dompierre-sur-Besbre |
| 03500 | Saint-Pourçain-sur-Sioule | Auvergne-Rhône-Alpes | Allier | Moulins | Saint-Pourçain-sur-Sioule |
| 03510 | Chassenard | Auvergne-Rhône-Alpes | Allier | Moulins | Dompierre-sur-Besbre |
| 03630 | Désertines | Auvergne-Rhône-Alpes | Allier | Montluçon | Montluçon-2 |
| 03700 | Bellerive-sur-Allier | Auvergne-Rhône-Alpes | Allier | Vichy | Bellerive-sur-Allier |
| 03800 | Gannat | Auvergne-Rhône-Alpes | Allier | Vichy | Gannat |