Galesburg, IL is currently using one area code which is area code 309. Area Code 309 was created from a split of area codes 217 and 815 in 1957.
In addition to Galesburg, IL area code 309 serves a portion of west-central Illinois including the larger cities and communities of East Moline, East Peoria, Galesburg, Moline, Normal, Pekin, Peoria, and Rock Island in addition to many smaller communities.
Galesburg, IL is located in Knox County and observes the Central Time Zone.
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