Sioux City, IA
ZIP Codes in Sioux City, Iowa
December 14, 2025
| ZIP Code | Population | Coordinates |
|---|---|---|
| 51101 | 1,070 | 42.4937, -96.3942 |
| 51102 | -- | 42.3684, -96.3180 |
| 51103 | 17,005 | 42.5197, -96.4493 |
| 51104 | 22,759 | 42.5345, -96.4032 |
| 51105 | 11,214 | 42.5079, -96.3663 |
| 51106 | 27,652 | 42.4632, -96.3129 |
| 51108 | 5,555 | 42.5660, -96.3525 |
| 51109 | 3,619 | 42.6103, -96.4700 |
| 51111 | 124 | 42.4185, -96.3931 |
Sioux City has 9 ZIP codes