Hi,
The address details are generally stored in table "ADRC". if you want to get delivery address corresponding to PO line item then you can check table "EKPO" for particular PO (EBELN) and PO line item (EBELP) and then get the address number i.e. ADRNR from EKPO and then fetch the address details against ADRNR from ADRC table. Hope this helps you.
Srikanth