Longmont Zip Codes - Boulder County CO

Longmont, CO Zip Code Map

Longmont, CO is a city located in Boulder County, Colorado and has a land area of 198.94 square miles (515.25 km2). The water area for the city is 8.30 square miles or 21.50 km2. There are 4 total unique zip codes in Longmont, Colorado. The area code(s) for Longmont is 720/303.

Zip Codes for Longmont, CO (4)

Zip Code
City County
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80501 Longmont Boulder
80502 Longmont Boulder
80503 Longmont Boulder
80504 Longmont Weld

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