Mercer Island WA ZIP Code

Mercer Island city is located in Washington State, King County and has a unique zip code assigned by the US Postal Service Office.

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

Mercer Island Area Code is 206 and Time Zone is Pacific (GMT -08:00).

Mercer Island Zip Code - Washington

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

The Mercer Island Zip Code is 98040.

If you want to send a mail to Mercer Island City, you should use the 98040 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Mercer Island 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 98040 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Mercer Island 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 Washington.

Mercer Island, Washington - MAP

What is the Mercer Island Zip Code?

The Mercer Island Zip Code in Washington is 98040.

ZIP Plus 4 Mercer Island - US Streets Zip Codes

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What is the zip code for Mercer Island WA?


Mercer Island, Washington -

Mercer Island ZIP Code Lookup

98040 Zip Code File:
Zip Code: 98040,
City: Mercer Island
Mercer Island Area Code: 206
Mercer Island, WA - Time Zone: Pacific (GMT -08:00)
County: King
City Alias: Mercer Island
State: Washington
State Abb: WA

Washington Zip+4 - Nearby Mercer Island Cities

Cities near Mercer Island in Washington
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View more Washington zip codes

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