The Sepsi Metropolitan Area was established as an intercommunity development association, comprising the following administrative-territorial units: the Municipality of Sepsiszentgyörgy, as well as the communes of Árkos, Sepsibükszád, Bodok, Kökös, Gidófalva, Illyefalva, Málnás, Mikóújfalu, Maksa, Uzon, Réty and Sepsikőröspatak.