Rock Island, Illinois
Central Time Zone (UTC-6) · IL · —
About Area Codes in Rock Island, Illinois
Rock Island, Illinois is served by 2 area codes: 309, 861. When multiple area codes serve the same geographic area, it typically indicates overlay codes have been added to accommodate growing demand for phone numbers. All local calls within Rock Island require 10-digit dialing. The city is in the Central time zone (UTC-6).
Other cities in area code 309
Frequently Asked Questions
What area code is Rock Island, Illinois?
Rock Island, Illinois uses area codes 309 and 861.
What time zone is Rock Island in?
Rock Island is in the Central time zone (UTC-6).
Do I need to dial 10 digits when calling Rock Island?
Yes, all local calls in Rock Island require 10-digit dialing because the area is served by multiple overlay area codes.
When was area code 309 created?
Area code 309 was established in 1957 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 309 with Rock Island?
Other cities sharing area code 309 with Rock Island include Bloomington, Canton, East Peoria, Galesburg, Macomb, among others.
Rock Island, IL · Central Time Zone