Andhra State
The four districts of the region were part of the Madras Presidency until 1953. From 1953 to 1956, the region was a part of Andhra State and in 1956, the Telangana region was merged with Andhra State to form Andhra Pradesh State. On 2 February 1970, three taluks from Kurnool i.e., Markapur, Cumbum and Giddalur were merged along with some other taluks of Nellore district and Guntur district to form Prakasam district.