North Sioux City zip code
Zip code in North Sioux City, SD
The location North Sioux City belongs to Union County, state of South Dakota. North Sioux City has been assigned with the zip code 57049.
North Sioux City is the official name of the location so if you want to use the US Postal Service you must use that name. You can also use any of the following names: Dakota Dunes, Mccook Lake, N Sioux City.
| Zip code | Type | Population |
|---|---|---|
| 57049 | STANDARD | 7,390 |
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