Rock Springs WY ZIP Code
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Rock Springs city is located in Wyoming State, Sweetwater County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Rock Springs WY zip code by its streets and block numbers if we have some of the Rock Springs streets loaded in our website
Rock Springs Area Code is 307 and Time Zone is Mountain (GMT -07:00).
Rock Springs Zip Code - Wyoming
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Rock Springs City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Rock Springs ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Rock Springs, Wyoming.
The Rock Springs Zip Code is 82901, 82902.
If you want to send a mail to Rock Springs City, you should use the 82901, 82902 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Rock Springs 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 82901, 82902 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Rock Springs 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 Wyoming.