Usps.zip Link
Introduced on , the ZIP ( Zone Improvement Plan ) code was designed to modernize mail delivery by enabling automated sorting. Before its adoption, mail passed through 17 sorting steps; the code reduced this significantly by providing a geographic "map" within a few digits. The 5-Digit Core:
Pinpoint specific post offices or delivery zones within that region. USPS.zip
Indicate regional areas or a Sectional Center Facility (SCF) , which acts as a central sorting hub. Introduced on , the ZIP ( Zone Improvement
