North Sioux City, SD zip code
North Sioux City, South Dakota uses one zip code: 57049. Most of it is in Union County. Together these zip codes are home to about 8K people.
Zip codes
1
Population
8K
All zips combined
Largest zip
57049
7,962 residents
Zip codes in North Sioux City
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 57049 | 7,962 | $93,134 |