Welcome to Rock Island ...

A typical abbreviation for Rock Island: Rock Is. (in Canada, 'Isld.' is the more common abbreviation.)

Time Zone: Rock Island lies in the Central Time Zone (CST/CDT) and observes daylight saving time. The time zone in French: CST- Heure Normale du Centre (HNC), CDT- Heure Avancée du Centre (HAC).

Area Codes for Rock Island: 204, 431 & 584<1>

Communities Also Named Rock Island ...

Using our Gazetteer, we found that there are 21 communities that are also named Rock Island - they are located in Florida (2), Idaho, Illinois, Indiana, Kansas (2), Massachusetts, Nevada, Oklahoma (2), Quebec, Tennessee, Texas (6), Virginia and Washington.

For more information, see our Tidbits & Trivia Page for Rock Island.

Footnotes ...

<1>

When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 204 code has been Overlayed with one of the following codes: 431 or 584. New phone numbers in the Rock Island area will be assigned with one of these codes: 204, 431 or 584. As a result, placing a call in the Rock Island area will require 10-digit dialing (where you enter both the area code and then the phone number).