Sioux County, Iowa ZIP Codes
- ZIP records
13 - Cities represented
13 - Sum of listed ZIP population estimates
41,702
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 51250 | Sioux Center | 9,970 |
| 2 | 51041 | Orange City | 7,324 |
| 3 | 51201 | Sheldon | 6,430 |
| 4 | 51247 | Rock Valley | 5,094 |
| 5 | 51023 | Hawarden | 3,473 |
| 6 | 51239 | Hull | 2,876 |
| 7 | 51003 | Alton | 1,938 |
| 8 | 51238 | Hospers | 1,502 |
| 9 | 51027 | Ireton | 1,280 |
| 10 | 51234 | Boyden | 1,172 |
Cities in Sioux County
- Alton
- Boyden
- Chatsworth
- Hawarden
- Hospers
- Hull
- Ireton
- Matlock
- Maurice
- Orange City
- Rock Valley
- Sheldon
- Sioux Center
ZIP Directory
- ZIP 51003
- ZIP 51011
- ZIP 51023
- ZIP 51027
- ZIP 51036
- ZIP 51041
- ZIP 51201
- ZIP 51234
- ZIP 51238
- ZIP 51239
- ZIP 51244
- ZIP 51247
- ZIP 51250
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.