Castle Rock WA ZIP Code

Castle Rock city is located in Washington State, Cowlitz County and has a unique zip code assigned by the US Postal Service Office.

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

Castle Rock Area Code is 360 and Time Zone is Pacific (GMT -08:00).

Castle Rock Zip Code - Washington

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

The Castle Rock Zip Code is 98611.

If you want to send a mail to Castle Rock City, you should use the 98611 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Castle Rock 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 98611 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Castle Rock 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.

Castle Rock, Washington - MAP

What is the Castle Rock Zip Code?

The Castle Rock Zip Code in Washington is 98611.

ZIP Plus 4 Castle Rock - US Streets Zip Codes

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Castle Rock, Washington -

Castle Rock ZIP Code Lookup

98611 Zip Code File:
Zip Code: 98611,
City: Castle Rock
Castle Rock Area Code: 360
Castle Rock, WA - Time Zone: Pacific (GMT -08:00)
County: Cowlitz
City Alias: Castle Rock
State: Washington
State Abb: WA

Washington Zip+4 - Nearby Castle Rock Cities

Cities near Castle Rock in Washington
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