Monmouth OR ZIP Code
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Monmouth city is located in Oregon State, Polk County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Monmouth OR zip code by its streets and block numbers if we have some of the Monmouth streets loaded in our website
Monmouth Area Code is 503 and Time Zone is Pacific (GMT -08:00).
Monmouth Zip Code - Oregon
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Monmouth City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Monmouth ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Monmouth, Oregon.
The Monmouth Zip Code is 97361.
If you want to send a mail to Monmouth City, you should use the 97361 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Monmouth 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 97361 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Monmouth 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 Oregon.