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  2. What is the zip code of Longmont, CO, 80503

Longmont (CO) Zip Code is 80503 Latest Details Mar, 2025

Updated: 11-03-2025

Longmont (CO) zip Code is 80503, Postal Code details. Longmont is located in state CO, United States.

Find Zip Code 80503 Details

ZIP code 80503 is located in Longmont CO in the United States.

Postal Code United States Zip Code 80503 Latest update Longmont, CO
Zip Code / Postal Code 80503

City

Longmont

State Code

CO

County

Boulder, United States

Postal Locations

Longmont, CO - Zip Code is - 80503

Postal

United States Postal Service USPS Link

Delivery Type

Package Delivery and first class mail.

The zip code 80503 is an essential part of the postal system in Longmont, CO. Located in a vibrant part of the city, this zip code covers a variety of neighborhoods, offering residents and businesses a unique blend of suburban comfort and urban convenience. Whether you're looking to send mail, relocate, or simply learn more about the area, Longmont has a lot to offer.

FAQ about Zip Code 80503, Longmont, (CO)

What is Zip code Longmont?

Longmont Zip Code: 80503, used by the Longmont Post Office and USPS, is a Zone Improvement Plan code that ensures faster, accurate mail delivery in Boulder, CO. Represented by the American Postal Workers Union (APWU), USPS oversees postal operations.

What is Postal code of area Longmont?

Longmont Postal Code is: 80503

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