Pin code 301021
What 301021 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 021 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 021 identifies the delivery office.