Area Code 605 — South Dakota

Q: What time zone is area code 605?

Area code 605 is in the CM zone (CM).

Active General Purpose Code United States

Area code 605 is located in South Dakota and operates on CM . The largest city served is Sioux Falls .

Coverage Area

Area code 605 — South Dakota

Area Code Details

Area Code: 605
State / Province: South Dakota (SD)
Country: United States
Time Zone: CM CM
Local Time Now: —
Status: Active
Code Type: General Purpose Code
In Service Since: January 1, 1947
Assigned: January 1, 1947
Population Served: ~463,980 est.

Cities Served

Largest City Sioux Falls

Sioux Falls Rapid City Aberdeen Brookings Watertown Mitchell Yankton Pierre Huron Spearfish Vermillion Brandon Box Elder Rapid Valley Ellsworth Air Force Base Madison Sturgis Belle Fourche Harrisburg Tea

Rate Centers & Exchanges

25 rate centers identified within area code 605

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Nearby Area Codes

Frequently Asked Questions About Area Code 605

What state is area code 605?

Area code 605 is located in South Dakota, United States.

Where is area code 605 from?

Area code 605 originates from South Dakota. It operates in the CM zone.

What time zone is area code 605?

Area code 605 falls within the CM zone (CM).

What cities are in area code 605?

Area code 605 serves cities including Sioux Falls, Rapid City, Aberdeen, Brookings, Watertown, Mitchell, Yankton, Pierre, and more.

Is a call from area code 605 a scam?

Area code 605 is a legitimate general purpose code area code serving South Dakota. Like any area code, individual numbers using 605 can be used for scam calls — always verify the specific number if you receive an unexpected or suspicious call.