Boulder County, Colorado ZIP Codes

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ZIP Codes in Boulder County with Associated Cities & Towns

Boulder County, CO - Standard ZIP Codes
80020 | 80026 | 80027 | 80301 | 80302 | 80303 | 80304 | 80305 | 80403 | 80422 | 80455 | 80466 | 80481 | 80501 | 80503 | 80504 | 80510 | 80513 | 80516 | 80540
Boulder County, CO - PO Box ZIP Codes (NO DEMOGRAPHIC DATA)
80025 | 80306 | 80307 | 80308 | 80471 | 80502 | 80533 | 80544
Boulder County, CO - Unique - Single Entity ZIP Codes (NO DEMOGRAPHIC DATA)
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.

ZIP Codes in Boulder County Address Data

  • Businesses Addresses: 17,810
  • PO Box Addresses: 11,410
  • Residential Addresses: 184,092
    • Multi-Family Addresses: 34,605
    • Single Family Addresses: 145,342

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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


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