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  1. ZIP Codes for BOULDER, Colorado. Use our address lookup or code list to find the correct 5-digit or 9-digit (ZIP+4) code for your postal mails destination.

  2. Boulder Zip code, introduced by the United States Postal Service (USPS) in 1963, are numerical codes used to identify specific geographic regions for mail delivery. and Boulder zip code used a 5-digit postal format XXXXX, The first 3 digit represent the postal delivery zone code, and last 2 digit represent the Post office in the Boulder.

  3. A Complete List of All 29 ZIP Codes in Boulder, CO . ... US ZIP Codes ZIP Code Tools Canada Postal Codes Area Codes Politics POI ... Colorado ZIP Code Map; Boulder ...

  4. The ZIP Codes in Boulder range from 80301 to 80503. Of the ZIP codes within or partially within Boulder there are 5 Standard ZIP Codes, 3 Unique ZIP Codes and 3 PO Box ZIP Codes. The total population of ZIP Codes in Boulder is 129521. Data Updated October 2, 2024. Map List Related.

  5. Oct 1, 2024 · The combined population for all ZIP Codes in Boulder, CO is 131,690. Population Density is 823.06 persons per square mile. Average Household Size is 2.20 persons and Average Family Size is 3.29 persons. The Census Designated Place population for Boulder city; Colorado is 108,250.

  6. All 11 ZIP Codes of Boulder, CO Part of 1 County. 11 ZIP code locations of Boulder, CO spread across 1 county of Colorado in the United States. Boulder County; 2 Area Codes are used in Boulder, CO. 2 NPA codes 303 and 720 are being used in all Boulder city, CO ZIP code locations in the United States, according to North American Numbering Plan ...

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  8. City: BOULDER, CO - ZIP Code | Colorado United States ZIP Code 5 Plus 4 ️. Home » CountyFIPS: 08013 - Boulder County. City: BOULDER, CO - ZIP Code. BOULDER ZIP Codes are 80301, 80302, 80303,etc. This page contains BOULDER 9-digit ZIP Code list, BOULDER population, schools, museums, libraries, universities, hospitals, post offices, and ...