A zip code, short for Zone Improvement Plan code, is a 5-digit number used by the US Postal Service to route mail efficiently. It acts like a mini address within your city, helping mail carriers quickly deliver to specific neighborhoods and buildings. Think of it as a geographical fingerprint for your mailbox!
Source:
https://www.accountiod.com/what-is-a-postal-code-on-a-debit-card/
