Kamar yadda muka sani, babban birni a cikin Colombia shine tsarin babban birni da kuma wasu ƙananan hukumomi na kusa da ke tallafawa kasuwancin ta, siyasa, da dai sauransu.
Ofayan mahimman mahimmanci shine babban birni na Medellín, wanda aka gina akan wani yanki wanda ya ƙunshi kwarin Aburrá.
Babban cibiyar garin Medellín da cibiyoyin kewayen yankin da ke cikin wannan yankin na Metropolitan, sune: Bello, Barbosa, Caldas, Copacabana, Envigado, Girardota, Itagüí, La Estrella da Sabaneta.
Tsarin yanayin kasa na yankin yana gabatar da matsalolin samun dama, da kayyade yankuna masu yuwuwar mu'amala da sanya yanayin tafiyar tattalin arziki, zuwa babban harka, zuwa agglomeration na Kwarin Aburrá. Sakamakon haka, akwai hanyar sadarwa mai rauni a yankin, tare da tallafi kaɗan daga cibiyoyin matsakaici da matakan taimako waɗanda ke aiki a yankin tasirin su.