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Area code 712

Area code 712 covers Sioux City, Iowa. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: Iowa Major City: Sioux City Central Time (CT) Overlay: None
01 / WHERE IT IS

Where is area code 712?

Area code 712 is assigned to Sioux City and the surrounding region in Iowa. Calls to numbers that start with 712 are routed to this area.

Area code 712 is not currently part of an overlay: it serves its territory on its own.

Counties covered

Woodbury CountyPottawattamie CountySioux CountyCarroll CountyPlymouth CountyLyon CountyShelby CountyBuena Vista CountySac CountyMonona CountyDickinson CountyClay CountyO'Brien CountyCrawford CountyMills CountyFremont CountyPage CountyCass CountyHarrison CountyCherokee County

Line types

  • Mobile 26.07%
  • Landline 73.93%
02 / MAP

Area code 712 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Sioux City

This area code is in the Central Time (CT) time zone.

Local timeSioux City, IA--:--:--

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America/ChicagoLive
04 / HOW TO DIAL

How to call Sioux City

WITHIN THE US712 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 712 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 712 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 712 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 712 555 0123
🇦🇺Australia0011 1 712 555 0123
🇯🇵Japan010 1 712 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 712

Share of the number blocks by carrier and line type.

Landline

Windstream Communications
18%
Lumen Technologies
16%
Sinch
6%
Frontier Communications
6%
NORTHWEST IOWA TELEPHONE
3%
Others
51%

Mobile

Verizon Wireless
41%
AT&T Mobility
26%
UScellular
12%
T-MOBILE USA
10%
T-Mobile USA
3%
Others
7%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 712

629 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(712) 200 Landline Alta ALTA MUNICIPAL UTILITIESALTA MUNICIPAL UTILITIES - IA
(712) 201 Landline Underwood SinchONVOY, LLC - IA
(712) 202 Landline Sioux City Windstream CommunicationsPAETEC ITEL, LLC
(712) 203 Mobile Sioux City T-MOBILE USAT-MOBILE USA, INC.
(712) 204 Mobile Sioux City T-MOBILE USAT-MOBILE USA, INC.
(712) 205 Landline Audubon Windstream CommunicationsWINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS
(712) 206 Landline Armstrong Windstream CommunicationsWINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH
(712) 207 Landline Shelby WALNUT TELEPHONE COMPANYWALNUT TELEPHONE COMPANY, INC. - IA
(712) 208 Mobile Mapleton AT&T MobilityNEW CINGULAR WIRELESS PCS, LLC - IL
(712) 209 Mobile Estherville Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA

Showing 10 of 629 prefixes

07 / FAQ

Frequently asked questions about area code 712

Where is area code 712 used?
Area code 712 serves Sioux City and the surrounding area in Iowa, including Woodbury County, Pottawattamie County, Sioux County, Carroll County, Plymouth County.
What city is area code 712 from?
The main city of area code 712 is Sioux City, IA.
What time zone is area code 712 in?
Area code 712 is in the Central Time (CT) time zone (America/Chicago).
Is 712 an overlay area code?
No. Area code 712 is not currently part of an overlay.
How do I call a number with area code 712 from the United States?
Dial the 10 digits: 712 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 712 number from another country?
Dial your country's exit code (or +), then 1, then 712 and the seven-digit number. From a mobile you can use +1 712 XXX XXXX.
Which carriers use area code 712?
Most landline blocks belong to Windstream Communications and most mobile blocks to Verizon Wireless. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 712 for landlines, mobiles or both?
Both. About 73.93% of the number blocks are landline, 26.07% mobile.
How do I save a 712 number in WhatsApp or my phone?
Save it in international format: +1 712 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 712?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

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