Madagascar Business Directory: MDG is the ISO 3 alphabet country code of Madagascar. Currency of Madagascar is Ar, which has a short code of MGA. Capital of Madagascar is Antananarivo. Madagascar has the population of 26262810 and approximate area is 587041.00 square kilometers (or approx. 364787.2774 square miles). Population density of Madagascar is approx. 44/Km2 (or approx. 27.3416/mile2)