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ZIP Codes in Boulder, COLORADO

Find complete information about all ZIP codes in Boulder, Colorado. Our interactive map shows the postal code boundaries and locations throughout the city.

Boulder Postal Codes

The postal system in Boulder is organized to efficiently serve both residential and commercial areas. Each ZIP code represents a specific delivery zone within the city limits.

Código Postal COLORADO city BOULDER - zip code Estados Unidos USA
ZIP Code (Zip Code) - Representación de área del código postal de los correos de los Estados Unidos.
Código Postal EEUU - COLORADO - BOULDER
City Name Zip Code Type Population
Boulder, CO PRIMARY 80301 STANDARD 19.036
Boulder, CO PRIMARY 80302 STANDARD 15.073
Boulder, CO PRIMARY 80303 STANDARD 16.791
Boulder, CO PRIMARY 80304 STANDARD 21.108
Boulder, CO PRIMARY 80305 STANDARD 13.065
Boulder, CO PRIMARY 80306 PO BOX 1.605
Boulder, CO PRIMARY 80307 PO BOX indefined
Boulder, CO PRIMARY 80308 PO BOX 1.201
Boulder, CO PRIMARY 80309 UNIQUE indefined
Boulder, CO PRIMARY 80310 UNIQUE indefined
Boulder, CO PRIMARY 80314 UNIQUE indefined
Boulder, CO PRIMARY 80321 UNIQUE indefined
Boulder, CO PRIMARY 80322 UNIQUE indefined
Boulder, CO PRIMARY 80323 UNIQUE indefined
Boulder, CO PRIMARY 80328 UNIQUE indefined
Boulder, CO PRIMARY 80329 UNIQUE indefined
City Name Zip Code Type Population
Boulder, CO PRIMARY 80301 STANDARD 19.036
Boulder, CO PRIMARY 80302 STANDARD 15.073
Boulder, CO PRIMARY 80303 STANDARD 16.791
Boulder, CO PRIMARY 80304 STANDARD 21.108
Boulder, CO PRIMARY 80305 STANDARD 13.065
Boulder, CO PRIMARY 80306 PO BOX 1.605
Boulder, CO PRIMARY 80307 PO BOX indefined
Boulder, CO PRIMARY 80308 PO BOX 1.201
Boulder, CO PRIMARY 80309 UNIQUE indefined
Boulder, CO PRIMARY 80310 UNIQUE indefined
Boulder, CO PRIMARY 80314 UNIQUE indefined
Boulder, CO PRIMARY 80321 UNIQUE indefined
Boulder, CO PRIMARY 80322 UNIQUE indefined
Boulder, CO PRIMARY 80323 UNIQUE indefined
Boulder, CO PRIMARY 80328 UNIQUE indefined
Boulder, CO PRIMARY 80329 UNIQUE indefined
Código Postal EEUU - COLORADO - BOULDER

Definitions of Status

  • PRIMARY: Refers to the main name of the city, typically its official designation. Although the city might have an ACCEPTABLE alternative name, the primary name remains the official one.
  • ACCEPTABLE: Indicates a suitable alternative city name. Commonly abbreviated city names are often listed as unacceptable because abbreviations are not considered an acceptable city name format.
  • IMPROPER/NOT ACCEPTABLE: Denotes that an inappropriate city name was entered or received based on the provided information.
  • UNIQUE: Assigned to a business, government agency, or entity with a significant mail volume. This designation depends on the average daily volume of letter-sized mail received, the availability of ZIP code numbers in the postal area, and a cost-benefit analysis by the postal service.