Where Exactly Is Area Code 730 Located in Illinois?

[MutedNewt]

I got a call from (730) 123-4567 and was told it's from Belleville, IL. Is that the only city in the 730 area? Or does it cover other parts of Illinois too?

[Nightlite]

Area code 730 is an overlay for the 618 area in southern Illinois, covering cities like Belleville, East St. Louis, and Carbondale, among others. If you want to verify a specific 730 number or learn more about the area, you can check here. It’s not limited to Belleville alone but serves a broad region in that part of the state.