Sioux City, Iowa
Central Time Zone (UTC-6) · IA · —
About Area Codes in Sioux City, Iowa
Sioux City, Iowa is served by area code 712, which was one of the original area codes established in 1947 under the North American Numbering Plan. The city falls within the Central time zone (UTC-6). All calls to and from Sioux City use the 712 area code prefix for local and long-distance dialing.
Other cities in area code 712
Frequently Asked Questions
What area code is Sioux City, Iowa?
Sioux City, Iowa uses area code 712.
What time zone is Sioux City in?
Sioux City is in the Central time zone (UTC-6).
Do I need to dial 10 digits when calling Sioux City?
Standard 7-digit dialing is used for local calls within Sioux City. However, 10-digit dialing is always accepted and required for long-distance calls.
When was area code 712 created?
Area code 712 is one of the original 86 area codes established in 1947 as part of the North American Numbering Plan (NANP).
What cities share area code 712 with Sioux City?
Other cities sharing area code 712 with Sioux City include Atlantic, Carroll, Cherokee, Council Bluffs, Denison, among others.
Sioux City, IA · Central Time Zone