Pin code 301020
What 301020 tells you
The first digit, 3, is the postal zone. The first two digits, 30, are the postal circle. The first three, 301, are the sorting district, and 020 identifies the delivery office.
The first digit, 3, is the postal zone. The first two digits, 30, are the postal circle. The first three, 301, are the sorting district, and 020 identifies the delivery office.