[ 13 ] Andhra Pradesh has 23 districts: Adilabad , Anantapur , Chittoor , Kadapa , East Godavari , Guntur , Hyderabad , Karimnagar , Khammam , Krishna , Kurnool , Mahbubnagar , Medak , Nalgonda , Sri Potti Sreeramulu Nellore , Nizamabad , Prakasam , Rangareddy , Srikakulam , Visakhapatnam