Alamosa CO ZIP Code
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Alamosa city is located in Colorado State, Alamosa County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Alamosa CO zip code by its streets and block numbers if we have some of the Alamosa streets loaded in our website
Alamosa Area Code is 719 and Time Zone is Mountain (GMT -07:00).
Alamosa Zip Code - Colorado
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Alamosa City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Alamosa ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Alamosa, Colorado.
The Alamosa Zip Code is 81101, 81102.
If you want to send a mail to Alamosa City, you should use the 81101, 81102 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Alamosa 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 81101, 81102 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Alamosa 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.