Rock Island TX ZIP Code

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

You can search for the Rock Island TX 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 979 and Time Zone is Central (GMT -06:00).

Rock Island Zip Code - Texas

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, Texas.

The Rock Island Zip Code is 77470.

If you want to send a mail to Rock Island City, you should use the 77470 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 77470 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 Texas.

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What is the Rock Island Zip Code?

The Rock Island Zip Code in Texas is 77470.

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Rock Island, Texas - US Zip Code

Rock Island ZIP Code Lookup

77470 Zip Code File:
Zip Code: 77470,
City: Rock Island
Rock Island Area Code: 979
Rock Island, TX - Time Zone: Central (GMT -06:00)
County: Colorado
City Alias: Rock Island
State: Texas
State Abb: TX

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