Everything you need to know about area code 605 in South Dakota
QUICK FACTS
South Dakota
Central Time Zone
Original area code
Estimated residents served
South Dakota
Primary code for this region
ABOUT THIS AREA CODE
Area code 605 serves the entire state of South Dakota including Sioux Falls, Rapid City, and Mount Rushmore. It is the only area code for the state.
Phone numbers with the 605 area code follow the format (605) XXX-XXXX, where the next three digits represent the local exchange. The 605 area code is part of the North American Numbering Plan (NANP) and is regulated by the Federal Communications Commission (FCC).
If you receive a call from a 605 number that you don't recognize, you can search it using the lookup tool above. While the 605 area code legitimately serves millions of residents and businesses in the Sioux Falls area, scammers sometimes spoof local area codes to make their calls appear more trustworthy. Always verify unfamiliar numbers before returning calls or sharing personal information.
The Sioux Falls region served by area code 605 is one of the most significant areas in South Dakota. As a primary geographic code, 605 has been the main identifier for this region since the original numbering plan was established.
For detailed information about any phone number in the 605 area code, including owner identification, carrier data, and spam reports, use our search tool above or visit one of our trusted lookup providers.
CITIES & COMMUNITIES
SPAM & SCAM ALERTS
These are frequently reported scam patterns from phone numbers using the 605 area code. Scammers often spoof area codes, so a call appearing to come from 605 may originate elsewhere.
Callers claim your Social Security number has been suspended due to suspicious activity and demand personal information to reactivate it.
Robocalls claim your car warranty is expiring and pressure you into purchasing expensive and unnecessary extended coverage.
Callers impersonate your electric or gas company, threatening immediate service disconnection unless payment is made by phone.
Stay Safe: Never share personal information with incoming callers. If suspicious, hang up and search the number above.
FREQUENTLY ASKED QUESTIONS
Area code 605 serves Sioux Falls, South Dakota. Area code 605 serves the entire state of South Dakota including Sioux Falls, Rapid City, and Mount Rushmore. It is the only area code for the state.
Area code 605 is in the Central timezone. Calls from 605 numbers originate from the Sioux Falls region.
Not necessarily. Area code 605 serves many people in Sioux Falls. However, scammers can spoof any area code. If you receive a suspicious call from a 605 number, search it above before calling back.
Area code 605 was one of the original area codes established in 1947. It serves as the primary geographic code for its region.
RELATED AREA CODES
WHO CALLED ME
If you received an unknown call from a 605 number, use our dedicated lookup page to identify the caller and check for scam reports.
Who Called Me From 605? →