Dear student,

According to the sixth economics census, here are the district and district codes of andhra pradesh.

Andhra Pradesh :-

01 - Srikakulam
02 - Vizianagaram
03 - Visakhapatnam
04 - East Godavari
05 - West Godavari
06 - Krishna
07 - Guntur
08 - Prakasam
09 - Nellore
10 - Kadapa
11 - Kurnool
12 - Ananthapur
13 - Chittoor

Also check of the following link to know more:-
http://mospi.nic.in/sites/default/files/6ec_dirEst/ec6_district_code_&_names.html