Geographic Regions and Area Codes in Area Code 605

Area Code 605 is located in the state of South Dakota and covers a wide range of cities and counties. This area code includes major cities such as Sioux Falls, Rapid City, Aberdeen, Brookings, and Watertown. The area code spans 66 counties, including Minnehaha County, Pennington County, Brown County, Lincoln County, and Union County. The primary area code for the entire state of South Dakota is 605, which has been in service since January 1, 1947. This long-standing area code is crucial for businesses operating in the region, providing a consistent and reliable means of communication.

Key regions within Area Code 605:

  • Sioux Falls
  • Rapid City
  • Aberdeen
  • Brookings
  • Watertown