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About area code 605

This are code servers phone numbers of the entire state of South Dakota

History

Deadwood’s 1878 telephone exchange ( 605 area code ) was the first in South Dakota. In 1890, Harper’s Weekly showed overhead wires following the rails across the Dakota landscape. 

People in South Dakota find Telephones were good for their business. 

Shop owners saw increase in sales where they had telephone service.

Time Zone

This area code comes in CST Time.

Standard time:UTC/GMT -6:00 hours

Current Time

Major Cities

Sioux Falls is biggest city. other cities are Rapid City, Aberdeen, Brookings, Watertown and Mitchell.

Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 7
Rain: averages 23 inches of rain a year
Snow: averages 39 inches of snow a year

Surrounding area codes

218, 307, 308, 320, 402,406

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