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- Le code officiel géographique Belfort est 086.
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- Andelnans (90001)
- Angeot (90002)
- Anjoutey (90003)
- Argiésans (90004)
- Autrechêne (90082)
- Auxelles-Bas (90005)
- Auxelles-Haut (90006)
- Banvillars (90007)
- Bavilliers (90008)
- Belfahy (70061)
- Belfort (90010)
- Bermont (90011)
- Bessoncourt (90012)
- Bethonvilliers (90013)
- Botans (90015)
- Bourg-sous-Châtelet (90016)
- Bourogne (90017)
- Brebotte (90018)
- Bretagne (90019)
- Brevilliers (70096)
- Buc (90020)
- Chagey (70116)
- Champagney (70120)
- Charmois (90021)
- Chaux (90023)
- Chenebier (70149)
- Châlonvillars (70117)
- Châtenois-les-Forges (90022)
- Chèvremont (90026)
- Cravanche (90029)
- Cunelières (90031)
- Danjoutin (90032)
- Denney (90034)
- Dorans (90035)
- Eguenigue (90036)
- Errevet (70215)
- Essert (90039)
- Felon (90044)
- Fontaine (90047)
- Fontenelle (90048)
- Foussemagne (90049)
- Frahier-et-Chatebier (70248)
- Frais (90050)
- Froidefontaine (90051)
- Giromagny (90052)
- Grosmagny (90054)
- Grosne (90055)
- Lachapelle-sous-Chaux (90057)
- Lacollonge (90059)
- Lagrange (90060)
- Lamadeleine-Val-des-Anges (90061)
- Larivière (90062)
- Lepuix (90065)
- Magny-Danigon (70318)
- Malbouhans (70328)
- Mandrevillars (70330)
- Menoncourt (90067)
- Meroux-Moval (90068)
- Montreux-Château (90071)
- Morvillars (90072)
- Novillard (90074)
- Offemont (90075)
- Petit-Croix (90077)
- Petitmagny (90079)
- Phaffans (90080)
- Plancher-Bas (70413)
- Plancher-les-Mines (70414)
- Pérouse (90076)
- Recouvrance (90083)
- Reppe (90084)
- Riervescemont (90085)
- Romagny-sous-Rougemont (90086)
- Ronchamp (70451)
- Roppe (90087)
- Rougegoutte (90088)
- Rougemont-le-Château (90089)
- Saint-Germain-le-Châtelet (90091)
- Sermamagny (90093)
- Sevenans (90094)
- Trévenans (90097)
- Urcerey (90098)
- Valdoie (90099)
- Vauthiermont (90100)
- Vescemont (90102)
- Vétrigne (90103)
- Vézelois (90104)
- Échavanne (70205)
- Échenans-sous-Mont-Vaudois (70206)
- Éloie (90037)
- Étueffont (90041)
- Évette-Salbert (90042)