A Postal Index Number or PIN or PIN code is a code in the ... city and is known as the sorting office. A state may have one or more sorting districts depending on the volumes of mail handled.

Jaipreet Virdi is a historian of medicine, technology and disability. Her research and teaching interests include the history of medicine, the history of science, disability history, disability ...

A Postal Index Number or PIN or PIN code is a code in the ... city and is known as the sorting office. A state may have one or more sorting districts depending on the volumes of mail handled.