51103 vs 57049 ZIP Codes
Sioux City, IA · North Sioux City, SD
| Metric | 51103 | 57049 |
|---|---|---|
| City | Sioux City | North Sioux City |
| County | Woodbury | Union |
| State | Iowa | South Dakota |
| Time zone | Central Time | Central Time |
| Population | 17,453 | 5,789 |
Demographic figures come from U.S. Census Bureau / ACS data included in the source ZIP dataset; many ZIP codes have no demographic figures in that dataset.