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- Le code officiel géographique Montauban est 081.
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- Albefeuille-Lagarde (82001)
- Albias (82002)
- Barry-d'Islemade (82011)
- Les Barthes (82012)
- Bioule (82018)
- Bressols (82025)
- Bruniquel (82026)
- Castelferrus (82030)
- Caussade (82037)
- Cayrac (82039)
- Corbarieu (82044)
- Cordes-Tolosannes (82045)
- Escatalens (82052)
- Garganvillar (82063)
- Génébrières (82066)
- L'Honor-de-Cos (82076)
- Labarthe (82077)
- Labastide-du-Temple (82080)
- Lacourt-Saint-Pierre (82085)
- Lafrançaise (82087)
- Lamothe-Capdeville (82090)
- Lapenche (82092)
- Léojac (82098)
- Meauzac (82108)
- Mirabel (82110)
- Molières (82113)
- Monclar-de-Quercy (82115)
- Montastruc (82120)
- Montauban (82121)
- Montbeton (82124)
- Montech (82125)
- Monteils (82126)
- Montricoux (82132)
- Nègrepelisse (82134)
- Piquecos (82140)
- Puycornet (82144)
- Puygaillard-de-Quercy (82145)
- Puylaroque (82148)
- Réalville (82149)
- Saint-Cirq (82159)
- Saint-Nauphary (82167)
- Saint-Porquier (82171)
- Saint-Étienne-de-Tulmont (82161)
- La Salvetat-Belmontet (82176)
- Septfonds (82179)
- Vazerac (82189)
- Vaïssac (82184)
- Verlhac-Tescou (82192)
- La Ville-Dieu-du-Temple (82096)
- Villemade (82195)