About post offices, 1 possibilities exist (like "Causse-et-Diège Loupiac").
In term of bus you can find 2 places (like "Ligne 205 : Villefranche-de-Rouergue → Figeac").
Are you looking for an apartment for sale/rent? Or interested by a house? You can check that on Figaro Immobilier.
Closest cities