Is this a military address? going to an FPO, APO, or DPO?
If so the format should be as follows:
Country= USA
State= 2 letter abbreviation (ie. AA, AE or AO)
City= 3 letter abbreviation (ie APO, FPO, DPO)
So the address would look like this:
Smith, James PFC
Unit XXXX, Box XXXX
APO, AP 94332
For further assistance with military formatting, please follow this LINK