A zip code is a 5 or 9-digit postal code assigned by the US Postal Service to identify specific geographic areas and delivery routes to facilitate faster mail delivery.
How do zip codes work?
The first number represents a broader region. The next two digits indicate a more specific postal sorting facility. The final two numbers signify the local post office handling mail delivery for that address.
Why are zip codes so important?
Zip codes enable much faster, accurate delivery of mail and packages by precisely pinpointing the sender's and recipient's location down to the local post office.
What happens if a zip code is incorrect?
An incorrect or invalid zip code can result in packages and mail being severely delayed, misdelivered, or returned to sender.
How can you find the right zip code?
The USPS website has a zip code lookup tool to find the correct code for any address. Checking a recent piece of mail or bill can also verify the right number.
Can you mail a letter without a zip code?
Technically yes, but it has a high likelihood of never reaching its destination or being returned to you without a zip code.
Do all countries use zip codes?
No, zip codes are predominantly used in the United States and Philippines. Other countries utilize similar postal code systems with slight variations.
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