Thornton CO ZIP Code
Thornton city is located in Colorado State, Adams County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Thornton CO zip code by its streets and block numbers if we have some of the Thornton streets loaded in our website
Thornton Area Code is 303/720 and Time Zone is Mountain (GMT -07:00).
Thornton Zip Code - Colorado
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Thornton City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Thornton ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Thornton, Colorado.
The Thornton Zip Code is 80241.
If you want to send a mail to Thornton City, you should use the 80241 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Thornton 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 80241 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Thornton 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.