Minnehaha County · South Dakota
Sioux Falls, SD area codes and time zone
Quick answer
Sioux Falls is served by area code 605, keeps CST time (GMT-5), and sits in county FIPS 46099.
- Area code
- 605Within 25 miles of the city centre
- Time zone
- CSTAmerica/Chicago
- UTC offset
- GMT-5CDT in summer
- County FIPS
- 46099Minnehaha County
Dialling from and to Sioux Falls
What this means when you pick up the phone.
Local calls inside 605 may still work on seven digits, but ten-digit dialling is the safe default everywhere in the country now. From abroad, dial +1 then the ten digits.
More on Sioux Falls
Other reference data for this city.