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- Code : 5205
- Nom : Châteaubriant
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- Abbaretz (44001)
- La Chapelle-Glain (44031)
- Châteaubriant (44036)
- Derval (44051)
- Erbray (44054)
- Fercé (44058)
- Grand-Auverné (44065)
- La Grigonnais (44224)
- Issé (44075)
- Jans (44076)
- Juigné-des-Moutiers (44078)
- Louisfert (44085)
- Lusanger (44086)
- Marsac-sur-Don (44091)
- La Meilleraye-de-Bretagne (44095)
- Moisdon-la-Rivière (44099)
- Mouais (44105)
- Noyal-sur-Brutz (44112)
- Nozay (44113)
- Petit-Auverné (44121)
- Puceul (44138)
- Rougé (44146)
- Ruffigné (44148)
- Saint-Aubin-des-Châteaux (44153)
- Saint-Julien-de-Vouvantes (44170)
- Saint-Vincent-des-Landes (44193)
- Sion-les-Mines (44197)
- Soudan (44199)
- Soulvache (44200)
- Treffieux (44208)
- Vay (44214)
- Villepot (44218)