North Sioux City zipcode
| City | North Sioux City |
| ZIP Code | 57049 |
| Type | Standard |
| State Code | SD |
| State | South Dakota |
ZIP code of North Sioux City is 57049. This place is located in South Dakota state in US. To send any postal service to North Sioux City, you must use 57049 zipcode.
The ZIP code 57049 is also used with 3 more city names of South Dakota.
- Dakota Dunes, SD
- Mccook Lake, SD
- N Sioux City, SD