ZIP Codes in Boulder County with Associated Cities & Towns

Boulder County, CO - PO Box ZIP Codes
80025 80306 80307 80308 80471 80502 80533 80544
Boulder County, CO - Standard ZIP Codes
80026 80027 80301 80302 80303 80304 80305 80455 80466 80481 80501 80503 80510 80516 80540
Boulder County, CO - Unique - Single Entity ZIP Codes
80309 80310 80314
Note: Every ZIP Code has a single ACTUAL City Name assigned by the US Postal Service (USPS).
See the specific ZIP Code for acceptable Alternate City Names and spelling variations.
Map of Boulder County, CO ZIP Codes
With Actual (Default) City Names
Allenspark
Boulder
Eldorado Springs
Erie
Hygiene
Jamestown
Lafayette
Longmont
Louisville
Lyons
Nederland
Niwot
Pinecliffe
Ward

NOTE: LARGE COMPLEX ZIP CODE MAPS CAN BE SLOW LOADING!

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