Union County, Illinois
Union County, Illinois, has 8 towns and 7 ZIP codes, in area code 618, with 730 as an overlay.
Towns in Union County, A to Z
ZIP codes in Union County
Area codes in Union County
- Area code 618
In service since 1947. Shares its area with 730. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
- Area code 730
In service since July 7, 2023. Shares its area with 618. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Local numbers in area code 618
Looking for a phone number with a Union County area code? These 618 numbers are for sale through Exclusive Digits. Portable to Verizon, AT&T, T-Mobile and all major US carriers.
- (618) 688-6789East Saint Louis, IL$59View & buy
- (618) 688-9876East Saint Louis, IL$59View & buy
- (618) 737-1987Belleville, IL$59View & buy
- (618) 740-9877Salem, IL$59View & buy
- (618) 750-6787Collinsville, ILAlso spells OPUS$59View & buy
- (618) 750-7567Collinsville, IL$59View & buy
- (618) 750-7765Collinsville, IL$59View & buy
- (618) 750-7770Collinsville, IL$59View & buy
- (618) 750-7789Collinsville, IL$59View & buy
- (618) 750-7876Collinsville, IL$59View & buy
- (618) 769-8767Bartelso, IL$59View & buy
- (618) 770-7012Hutsonville, IL$59View & buy
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