Rock Island WA ZIP Code

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

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

Rock Island Area Code is 509 and Time Zone is Pacific (GMT -08:00).

Rock Island Zip Code - Washington

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

The Rock Island Zip Code is 98850.

If you want to send a mail to Rock Island City, you should use the 98850 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Rock 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 98850 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Rock 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.

Rock Island, Washington - MAP

What is the Rock Island Zip Code?

The Rock Island Zip Code in Washington is 98850.

ZIP Plus 4 Rock Island - US Streets Zip Codes

By pressing keys ctrol + F you can search Rock Island zip codes by its streets, highways, and know the ZIP+4 US ZIP Code

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What is the zip code for Rock Island WA?


Rock Island, Washington - US Zip Code

Rock Island ZIP Code Lookup

98850 Zip Code File:
Zip Code: 98850,
City: Rock Island
Rock Island Area Code: 509
Rock Island, WA - Time Zone: Pacific (GMT -08:00)
County: Douglas
City Alias: Rock Island
State: Washington
State Abb: WA

Washington Zip+4 - Nearby Rock Island Cities

Cities near Rock Island in Washington
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