South Sioux City, Nebraska Area Code
South Sioux City, NE utilizes an area code overlay in which area codes 402 and 531 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to South Sioux City, NE area code information read more about area codes 402 and 531 details and Nebraska area codes.
South Sioux City, NE is located in Dakota County and observes the Central Time Zone.
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