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area code

Biggest city:

Sioux Falls



South Dakota

Central (GMT -6)

Nearby area codes: 

Zip codes



Major Cities:

Sioux Falls, Rapid City, Aberdeen, Watertown, Brookings.

Sioux Falls

Average Income:





Unemployment Rate:

The 605 area code is an integral part of South Dakota's telecommunications network, serving the entire state and playing a crucial role in connecting its diverse communities. Statewide Coverage in South Dakota: Unique among many states, South Dakota is served by a single area code – 605. Established in 1947, it covers all of South Dakota, from the larger cities like Sioux Falls, Rapid City, and Aberdeen to the rural and tribal lands that make up much of the state's landscape. This statewide coverage ensures uniformity in dialing and connectivity across the entire state. Supporting a Range of Economic and Social Activities: The 605 area code facilitates communication across South Dakota’s varied landscape, supporting an economy that includes agriculture, healthcare, finance, and tourism, particularly in areas like the Black Hills and Badlands. The state's cultural heritage, including significant Native American communities, and political activities, such as the state legislature in Pierre, also rely on the connectivity provided by the 605 area code. Stability in a Changing Telecommunications Landscape: Despite the nationwide trend of area code exhaustion and the introduction of overlays and splits in other regions, the 605 area code has remained sufficient for South Dakota's needs. This stability reflects the state's relatively low population density and efficient use of numbering resources. The 605 area code is more than just a telecommunications feature; it represents the unity and identity of South Dakota, connecting its urban centers, rural areas, and tribal lands, and supporting the state's diverse economic, cultural, and political activities.
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