Monmouth, Illinois
Monmouth, Illinois, in Warren County, has ZIP code 61462 and area code 309, with 861 as an overlay.
- ZIP code
- 61462
- Area codes
- 309, 861
- County
- Warren County
- State
- Illinois
- Time zone
- Central Time
- Coordinates
- 40.9107, -90.6448
ZIP codes in Monmouth
Area codes for Monmouth
- 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
Monmouth is in the Central Time zone.
Towns near Monmouth
- Kirkwood10 km (6.2 mi)
- Gerlaw11.6 km (7.2 mi)
- Cameron12.4 km (7.7 mi)
- Little York13.9 km (8.6 mi)
- Alexis17.9 km (11 mi)
- Berwick18.7 km (12 mi)
- Biggsville18.9 km (12 mi)
- Smithshire19.6 km (12 mi)
Local numbers in area code 309
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- (309) 880-8678Ipava, IL$59View & buy
- (309) 880-8762Ipava, ILAlso spells USMC$59View & buy
- (309) 880-8767Ipava, IL$59View & buy
- (309) 880-8789Ipava, IL$59View & buy
- (309) 880-8876Ipava, ILAlso spells TURN$59View & buy
- (309) 880-8987Ipava, IL$59View & buy
- (309) 920-7770Bloomington, IL$59View & buy
- (309) 977-1765Green Valley, IL$59View & buy
- (309) 977-1876Green Valley, IL$59View & buy
- (309) 988-5678Lacon, IL$59View & buy
- (309) 280-6777Peoria, IL$69View & buy
- (309) 359-0777Mackinaw, IL$69View & buy
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