Articles & Guides

Browse all Zipko articles covering ZIP code lookups, postal system guides, area information, shipping tips, and relocation resources.

Postal Explained

The History of ZIP Codes: How America's Postal System Got Its Numbers

Discover how ZIP codes were invented in 1963, what each digit means, and why these five numbers became one of America's...

Jan 28, 2025 4 min read

Postal Explained

From the UK's alphanumeric postcodes to Japan's 7-digit system, postal codes vary wildly around the world. Here's a...

Mar 28, 2025 4 min read