SOUTH DAKOTA · AREA CODE GUIDE

605 area code location: Sioux Falls and Rapid City, South Dakota

Local date and time: Central TimeEnable JavaScript to see the current local date and time.
Mountain TimeEnable JavaScript to see the current local date and time.

Map data: UCLA Geoportal (2015) · NANPA · US Census Bureau, checked 26 September 2026. Boundaries are approximate.

605 area code: South Dakota

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605 area code at a glance

State: South Dakota
Primary cities: Sioux Falls, Rapid City, and Aberdeen
Established: 1 January 1947
Time zones: Central and Mountain Time
New code planned: No, as of 22 September 2026

605 is one of the original 1947 area codes and is still South Dakota's only one.

An area code does not show where a caller is now.

Rules for answering calls in South Dakota

General information with its sources, not legal advice. All sources checked 2 November 2026. An area code does not show where a caller is.

Recording calls

In South Dakota, anyone other than a sender, receiver, or party who intentionally overhears or records a communication by eavesdropping device without a sender's, receiver's, or party's consent commits a felony, with exceptions set out in the law.

Source: S.D. Codified Laws § 23A-35A-20(1)-(2)

Time zones

Central Time: Standard time UTC−06:00; Daylight saving time UTC−05:00
Mountain Time: Standard time UTC−07:00; Daylight saving time UTC−06:00

This area spans Central and Mountain time.

Time zones by place

Central Time

Sioux Falls
Aberdeen
Brookings
Watertown
Yankton
Mitchell
Huron
Pierre
Vermillion
Brandon
Madison
Dell Rapids
Hartford
Milbank
Mobridge
North Sioux City
Canton
Winner
Lennox
Volga
Chamberlain
Sisseton
Flandreau
Redfield
Beresford
Elk Point
Springfield
Webster
Parkston
Wagner
Crooks
Salem
Parker
Baltic
Groton
Miller
Freeman
Gregory
Platte
Wall Lake
Britton
Clark
Garretson
Tyndall
Mission
Gettysburg
De Smet
Centerville
Ipswich
Worthing
Arlington
Marion
Valley Springs
Viborg
Howard
Faulkton
Scotland
Elkton
Estelline
Plankinton
Alcester
Eureka
Wessington Springs
Castlewood
Armour
Colton
Lake Andes
Canistota
Alexandria
Lake Norden
Woonsocket
Onida
Highmore
Avon
Menno
Lake Preston
Selby
Burke
White River
Kimball
White
Humboldt
Corsica
Tripp
Bridgewater
Hayti
Murdo
Bowdle
Waubay
Wolsey
Emery
Presho
Mount Vernon
Jefferson
Irene
Wilmot
Herreid
Tabor
Leola
White Lake
Big Stone City
Hurley
Rosholt
Ethan
Hoven
Hudson
Florence
Wakonda
Blunt
Stickney
Veblen
Iroquois
Kennebec
Roscoe
Bristol
Langford
Summit
Bonesteel
Gary
Pukwana
New Effington
Pollock
Alpena
Tulare
Frederick
Wessington
Toronto
Doland
Mellette
Hecla
South Shore
Roslyn
Peever
Wentworth
Letcher
Hosmer
Columbia
Delmont
Goodwin
Conde
Spencer
Artesian
Astoria
Cavour
Reliance
Pierpont
Brandt
Hitchcock
Lesterville
Claremont
Glenham
Cresbard
Sinai
Stockholm
Harrold
Revillo
Canova
Claire City
Center
Andover
Bradley
Clayton
Mound City
Ree Heights
Orient
Turton
Wood
Nunda
Tolstoy
Lebanon
Witten
Long Lake
Seneca
Onaka
Academy
Alsen
Chester
Clearfield
Ferney
Forestburg
Fort Thompson
Gann Valley
Houghton
New Holland
Rosebud
Vivian
Winfred

Mountain Time

Rapid City
Spearfish
Sturgis
Belle Fourche
Hot Springs
Custer
Eagle Butte
Lemmon
Hill City
Martin
Edgemont
Philip
Wall
New Underwood
Newell
McLaughlin
Timber Lake
Kadoka
Dupree
Hermosa
Buffalo
Faith
Bison
Keystone
Nisland
Isabel
Buffalo Gap
Oelrichs
McIntosh
Midland
Camp Crook
Interior
Quinn
Wasta
Meadow
Belvidere
Ardmore
Creighton
Enning
Hayes
Kyle
La Plant
Long Valley
Maurine
Milesville
Oral
Pine Ridge
Sorum
Wicksville

The time zone of 33 communities is not recorded.

Sources: NANPA area code listing, NANPA places by area code. Checked 2026-09-25.

Business phone numbers in area code 605, answered by an AI agent

A local number for Sioux Falls, Rapid City, and Aberdeen, South Dakota, with an AI receptionist that takes caller details, answers the questions you give it, and books appointments. Numbers depend on what carriers have left.

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