The region was established in the 1987 administrative reform, and until 2010 it comprised the 4 prefectures of Athens, East Attica, Piraeus and West Attica.
A rexión de Ática estableceuse na reforma administrativa de 1987 e ata 2010 comprendía as 4 prefecturas de Atenas, Ática Oriental, O Pireo e Ática Occidental.