Williamsfield, Illinois
Williamsfield, Illinois, in Knox County, has ZIP code 61489 and area code 309, with 861 as an overlay.
- ZIP code
- 61489
- Area codes
- 309, 861
- County
- Knox County
- State
- Illinois
- Time zone
- Central Time
- Coordinates
- 40.9277, -90.0267
ZIP codes in Williamsfield
Area codes for Williamsfield
- Area code 309
In service since 1957. Shares its area with 861. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
- Area code 861
In service since February 24, 2023. Shares its area with 309. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.
Time zone
Williamsfield is in the Central Time zone.
Towns near Williamsfield
Local numbers in area code 309
Looking for a phone number with a Williamsfield area code? These 309 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.
- (309) 381-8008Galesburg, IL$69View & buy
- (309) 480-1881Castleton, IL$69View & buy
- (309) 520-7888Rock Island, IL$69View & buy
- (309) 560-5777Colfax, IL$69View & buy
- (309) 560-5888Colfax, IL$69View & buy
- (309) 590-9888Bloomington, IL$69View & buy
- (309) 600-3777Preemption, IL$69View & buy
- (309) 600-3888Preemption, IL$69View & buy
- (309) 600-6777Preemption, IL$69View & buy
- (309) 600-6888Preemption, IL$69View & buy
- (309) 610-3777Forest City, IL$69View & buy
- (309) 610-3888Forest City, IL$69View & buy
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