Where is Area Code 605?
Area code 605 is exclusively assigned to the state of South Dakota. It covers the entire state, serving a variety of regions, counties, and major cities. Here are some of the key areas covered by area code 605:
- Sioux Falls
- Rapid City
- Aberdeen
- Brookings
- Watertown
- Mitchell
- Pierre
- Huron
- Spearfish
- Yankton
For more detailed information about telecommunications in South Dakota, visit the South Dakota Public Utilities Commission.
South Dakota Public Utilities Commission
Capitol Building, 1st floor, 500 E. Capitol Ave, Pierre, SD 57501-5070
Phone: (605) 773-3201
What time zone is 605 area code in the USA?
The 605 area code is located in the Central Time Zone (CT) and Mountain Time Zone (MT), depending on the specific location within South Dakota. The state observes daylight saving time, shifting the clocks forward by one hour in the spring and back by one hour in the fall. For accurate timekeeping, refer to the National Institute of Standards and Technology.
History of the 605 Area Code
The 605 area code was established in 1947 as one of the original area codes under the North American Numbering Plan. It has remained unchanged since its inception, with no splits or overlays, due to the relatively stable population and demand for phone numbers in the region. For more historical details, consult the North American Numbering Plan Administrator (NANPA).
NANPA Mailing Address
One Tower Center Boulevard
Suite 800
East Brunswick, NJ 08816
NANPA Customer Support
Tel: 1-866-623-2282
Email: support@nanpa.com
Fax: 571-363-3838
How Many People Use the 605 Area Code?
The 605 area code serves the entire state of South Dakota, which has a population of 924,000 according to the latest data from the U.S. Census Bureau.
U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282
Is the 605 Area Code Toll-Free?
The 605 area code is a geographic area code, not a toll-free number. It is designated for use within the state of South Dakota and follows the standard rules for geographic area codes. Toll-free numbers in the United States typically begin with the prefixes 800, 888, 877, 866, 855, 844, or 833. For more information on toll-free numbers, visit the Federal Communications Commission.
Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/