605 Area code

--:-- CDT
--:-- MDT

Time zone	Difference to UTC/GMT
Central Time	Standard time zone: UTC/GMT -6:00 hours Daylight saving time: +1:00 hour Current time zone offset: UTC/GMT -5:00 hours Time zone abbreviation: CDT
Mountain Time	Standard time zone: UTC/GMT -7:00 hours Daylight saving time: +1:00 hour Current time zone offset: UTC/GMT -6:00 hours Time zone abbreviation: MDT

Time zones	DST Transitions
Central Time Mountain Time	DST starts on Sunday 09 March 2025, 02:00	DST ends on Sunday 02 November 2025, 02:00

Central Time:
- CST - Central Standard Time
- CDT - Central Daylight Time when daylight saving time is being observed (from early March to early November)

Mountain Time:
- MST - Mountain Standard Time
- MDT - Mountain Daylight Time when daylight saving time is being observed (from early March to early November)

605 Area code location map

Minnehaha County

• Sioux Falls
• Brandon
• Dell Rapids
• Hartford
• Crooks
• Garretson
• Baltic
• Valley Springs
• Colton
• Humboldt

Pennington County

• Rapid City
• Box Elder
• Hill City
• Wall
• New Underwood
• Keystone
• Wasta
• Quinn
• Creighton
• Wicksville

Brown County

• Aberdeen
• Groton
• Hecla
• Frederick
• Columbia
• Claremont
• Ferney

Brookings County

• Brookings
• Volga
• Elkton
• White
• Sinai

Codington County

• Watertown
• Florence
• South Shore

Davison County

• Mitchell
• Mount Vernon
• Ethan

Yankton County

• Yankton
• Lesterville

Hughes County

• Pierre
• Blunt
• Harrold

Beadle County

• Huron
• Wolsey
• Wessington
• Hitchcock

Lawrence County

• Spearfish
• Lead

Clay County

• Vermillion
• Wakonda

Lake County

• Madison
• Chester
• Wentworth
• Winfred
• Nunda

Meade County

• Sturgis
• Blackhawk
• Faith
• Enning
• Maurine

Butte County

• Belle Fourche
• Newell
• Nisland

Lincoln County

• Harrisburg
• Tea
• Canton
• Lennox
• Worthing
• Hudson

Fall River County

• Hot Springs
• Edgemont
• Oelrichs
• Ardmore
• Oral

Walworth County

• Mobridge
• Selby
• Glenham

Shannon County

• Pine Ridge
• Kyle

Grant County

• Milbank
• Big Stone City
• Revillo
• Stockholm

Tripp County

• Winner
• Witten
• Clearfield

Union County

• North Sioux City
• Beresford
• Elk Point
• Alcester
• Jefferson

Roberts County

• Sisseton
• Wilmot
• Rosholt
• Summit
• New Effington
• Peever
• Claire City

Brule County

• Chamberlain
• Kimball

Spink County

• Redfield
• Mellette
• Tulare
• Doland
• Conde

Moody County

• Flandreau

Stanley County

• Fort Pierre
• Hayes

Bon Homme County

• Springfield
• Tyndall
• Scotland
• Avon
• Tabor

Custer County

• Custer
• Hermosa
• Buffalo Gap

Day County

• Webster
• Waubay
• Bristol
• Roslyn
• Pierpont
• Andover

Charles Mix County

• Wagner
• Platte
• Lake Andes
• Academy

Todd County

• Rosebud
• Mission

Hutchinson County

• Parkston
• Freeman
• Tripp
• Menno

Hand County

• Miller
• Ree Heights

McCook County

• Salem
• Canistota
• Bridgewater
• Spencer

Dewey County

• Eagle Butte
• Timber Lake
• Isabel

Buffalo County

• Fort Thompson

Deuel County

• Clear Lake
• Gary
• Toronto
• Astoria
• Brandt

Gregory County

• Gregory
• Burke

Marshall County

• Britton
• Veblen
• Langford

Perkins County

• Lemmon
• Bison
• Meadow
• Sorum

Potter County

• Gettysburg
• Hoven
• Lebanon

Kingsbury County

• De Smet
• Arlington
• Lake Preston
• Iroquois

Bennett County

• Martin

Clark County

• Clark
• Bradley

Turner County

• Parker
• Centerville
• Marion
• Viborg
• Hurley

Edmunds County

• Ipswich
• Bowdle
• Roscoe
• Hosmer

Jerauld County

• Wessington Springs
• Alpena

McPherson County

• Eureka
• Leola

Miner County

• Howard
• Canova

Hyde County

• Highmore

Hamlin County

• Estelline
• Castlewood
• Lake Norden
• Hayti

Haakon County

• Philip
• Midland
• Milesville

Faulk County

• Faulkton
• Cresbard
• Orient
• Seneca
• Onaka

Aurora County

• Plankinton
• White Lake
• Stickney

Jackson County

• Kadoka
• Interior
• Belvidere
• Long Valley

Douglas County

• Armour
• Corsica
• Delmont
• New Holland

Corson County

• McLaughlin
• McIntosh

Sanborn County

• Woonsocket
• Letcher
• Artesian
• Forestburg

Sully County

• Onida

Hanson County

• Alexandria
• Emery

Mellette County

• White River
• Wood

Ziebach County

• Dupree

Lyman County

• Presho
• Kennebec
• Reliance
• Vivian

Jones County

• Murdo

Campbell County

• Herreid
• Pollock
• Mound City

Harding County

• Buffalo
• Camp Crook