Boulder CO ZIP Code

Boulder city is located in Colorado State, Boulder County and has a unique zip code assigned by the US Postal Service Office.


You can search for the Boulder CO zip code by its streets and block numbers if we have some of the Boulder streets loaded in our website

Boulder Area Code is 303 and Time Zone is Mountain (GMT -07:00).



Boulder Zip Code - Colorado

The US ZIP Code basic format consists of five decimal numerical digits assigned to the Boulder City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Boulder ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Boulder, Colorado.

The Boulder Zip Code is 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80310, 80314.



If you want to send a mail to Boulder City, you should use the 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80310, 80314 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Boulder ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80310, 80314 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Boulder city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Colorado.


Boulder, Colorado - MAP



What is the Boulder Zip Code?

The Boulder Zip Code in Colorado is 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80310, 80314.


ZIP Plus 4 Boulder - US Streets Zip Codes

By pressing keys ctrol + F you can search Boulder zip codes by its streets, highways, and know the ZIP+4 US ZIP Code


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Search Boulder Zip Code

What is the zip code for Boulder CO?

80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80310, 80314

Boulder, Colorado - US Zip Code



Boulder ZIP Code Lookup

80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80310, 80314 Zip Code File:
Zip Code: 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80310, 80314,
City: Boulder
Boulder Area Code: 303
Boulder, CO - Time Zone: Mountain (GMT -07:00)
County: Boulder
City Alias: Boulder, Boulder, Boulder, Boulder, Boulder, Boulder, Boulder, Boulder, Boulder, University Of Colorado, Boulder, Residence Halls Univ Of Co, Ibm Corp, Boulder
State: Colorado
State Abb: CO



Colorado Zip+4 - Nearby Boulder Cities

Cities near Boulder in Colorado
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View more Colorado zip codes