Sioux-City Area Codes, Iowa, Unites States

How to call Sioux-City, Iowa?

Sioux-City has 1 area code. To call Sioux-City you need to dial the Unites States country code (+1) and the following area code:

712

How to know if I'm receiving calls from Sioux-City, Iowa?

You are receiving calls from Sioux-City when the phone number starts with the following combination:

1-712

Other area codes in Unites States