Rock island Area Code

Rock island, IL is served by area code 309. This area code was initially assigned on 01-JAN-57 and has been in continuous service since 01-JAN-57, supporting the city's growing communication needs over the years.

The area code 309 is part of an overlay complex (309/861), which serves the same geographic region. This means that multiple area codes are used in the same area to accommodate the increasing demand for phone numbers.

City Name	Rock island, IL
Area Code	309
Overlay Complex	309/861
State	Illinois
Country	United State
Time Zone	Central Standard Time (CST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	01-JAN-57
In Service Date	01-JAN-57

Rock island, WA is served by area code 509. This area code was initially assigned on 01-JAN-57 and has been in continuous service since 01-JAN-57, supporting the city's growing communication needs over the years.

City Name	Rock island, WA
Area Code	509
State	Washington
Country	United State
Time Zone	Pacific Standard Time (PST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	01-JAN-57
In Service Date	01-JAN-57

Rock island, OK is served by area code 918. This area code was initially assigned on 01-JAN-53 and has been in continuous service since 01-JAN-53, supporting the city's growing communication needs over the years.

The area code 918 is part of an overlay complex (539/918), which serves the same geographic region. This means that multiple area codes are used in the same area to accommodate the increasing demand for phone numbers.

City Name	Rock island, OK
Area Code	918
Overlay Complex	539/918
State	Oklahoma
Country	United State
Time Zone	Central Standard Time (CST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	01-JAN-53
In Service Date	01-JAN-53