North Sioux City, South Dakota
Area code 605 · Population: 2,530
Central / Mountain
South Dakota
Pop. 2,530
Area Codes Serving North Sioux City
About North Sioux City, South Dakota
North Sioux City is a city in South Dakota that is served by area code 605. The city has a population of approximately 2,530 residents and is located in the Central / Mountain Time Zone.