Area Code Lookup
What Area Code Is Sioux Falls?
Area code 605 · South Dakota
Sioux Falls uses area code 605. It is located in South Dakota.
Area Code Serving Sioux Falls
Frequently Asked Questions
What area code is Sioux Falls?
Sioux Falls uses area code 605. It is located in South Dakota.
How do I call Sioux Falls from outside the US?
To call Sioux Falls from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-605-XXX-XXXX). The +1 is the country code for all NANPA countries.