Steilacoom WA ZIP Code
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Steilacoom city is located in Washington State, Pierce County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Steilacoom WA zip code by its streets and block numbers if we have some of the Steilacoom streets loaded in our website
Steilacoom Area Code is 253 and Time Zone is Pacific (GMT -08:00).
Steilacoom Zip Code - Washington
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Steilacoom City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Steilacoom ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Steilacoom, Washington.
The Steilacoom Zip Code is 98388.
If you want to send a mail to Steilacoom City, you should use the 98388 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Steilacoom 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 98388 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Steilacoom 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.