Andhra Pradesh 26 Districts – HeadQuarters 
Andhra Pradesh previously having 13 districts , now they became 26 districts.  
     

            
s.no  District               Headquarters 
1     Srikakulam             Srikakulam
2     Parvathipuram Manyam   parvathipram
3     Vizianagaram           Vizianagaram
4     Vishakapatnam          Vishakapatnam
5     Alluri Sitharama Raju  Paderu
6     Anakapalli             Anakapalli 
7     Kakinada               Kakinada 
8     East Godavari          Rajahmundry 
9     Konaseema              Amalapuram 
10    Eluru                  Eluru 
11    West Godavari          Bhimavaram 
12    NTR                    Vijayawada 
13    Krishna                Machilipatnam 
14    Palnadu                Narsaraopet 
15    Guntur                 Guntur 
16    Bapatla                Bapatla 
17    Prakasam               Ongole 
18    Sri Potti Sriramulu    Nellore 
                Nellore 
19    Kurnool                Kurnool 
20    Nandyal                Nandyal 
21    Anantapur              Anantapur 
22    Sri Sathya Sai         Puttaparthi 
23    YSR                    Kadapa 
24    Annamayya              Rayachoti 
25    Tirupati               Tirupati 
26    Chittoor               Chittoor 
        

  Largest District in terms of area is –Prakasam(14,322km2). 
Smallest District in terms of area is –Visakhapatnam(1048km2). Most Populous District is –Nellore(25 lakhs approximately). 
Least Populous District is –Manyam(9.3 lakhs approximately).