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US Postal Code Lookup

Find the city and state for a US postal code.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

This tool looks up a US ZIP code against a reference database to return its associated city and state, reflecting the system the US Postal Service introduced in 1963 to route mail: the first digit designates a broad geographic region (0 for the Northeast, 9 for the West Coast, and so on), and the remaining digits narrow down to a specific sectional center facility and delivery zone.

Online shoppers verifying a shipping address, businesses validating customer entries during checkout, remote workers and expats double-checking an unfamiliar US address, and students or trivia enthusiasts curious about US geography use this lookup. Enter any 5-digit ZIP code to see the city and state it belongs to.

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