Look up a Postal Code
| District / County name | Postal code | More |
|---|---|---|
| Alton | 51003 | Alton District, Sioux City, Iowa Province, United States 51003 |
| Boyden | 51234 | Boyden District, Sioux City, Iowa Province, United States 51234 |
| Carmel | 51247 | Carmel District, Sioux City, Iowa Province, United States 51247 |
| Carnes | 51003 | Carnes District, Sioux City, Iowa Province, United States 51003 |
| Chatsworth | 51011 | Chatsworth District, Sioux City, Iowa Province, United States 51011 |
| Granville | 51022 | Granville District, Sioux City, Iowa Province, United States 51022 |
| Hawarden | 51023 | Hawarden District, Sioux City, Iowa Province, United States 51023 |
| Hospers | 51238 | Hospers District, Sioux City, Iowa Province, United States 51238 |
| Hull | 51239 | Hull District, Sioux City, Iowa Province, United States 51239 |
| Ireton | 51027 | Ireton District, Sioux City, Iowa Province, United States 51027 |
| Lebanon | 51250 | Lebanon District, Sioux City, Iowa Province, United States 51250 |
| Matlock | 51244 | Matlock District, Sioux City, Iowa Province, United States 51244 |
| Maurice | 51036 | Maurice District, Sioux City, Iowa Province, United States 51036 |
| McNally | 51027 | McNally District, Sioux City, Iowa Province, United States 51027 |
| Middleburg | 51041 | Middleburg District, Sioux City, Iowa Province, United States 51041 |
| Newkirk | 51238 | Newkirk District, Sioux City, Iowa Province, United States 51238 |
| Orange City | 51041 | Orange City District, Sioux City, Iowa Province, United States 51041 |
| Perkins | 51239 | Perkins District, Sioux City, Iowa Province, United States 51239 |
| Rock Valley | 51247 | Rock Valley District, Sioux City, Iowa Province, United States 51247 |
| Sioux Center | 51250 | Sioux Center District, Sioux City, Iowa Province, United States 51250 |
District / County name
Postal code
Alton
51003
Alton District, Sioux City, Iowa Province, United States 51003
Boyden
51234
Boyden District, Sioux City, Iowa Province, United States 51234
Carmel
51247
Carmel District, Sioux City, Iowa Province, United States 51247
Carnes
51003
Carnes District, Sioux City, Iowa Province, United States 51003
Chatsworth
51011
Chatsworth District, Sioux City, Iowa Province, United States 51011
Granville
51022
Granville District, Sioux City, Iowa Province, United States 51022
Hawarden
51023
Hawarden District, Sioux City, Iowa Province, United States 51023
Hospers
51238
Hospers District, Sioux City, Iowa Province, United States 51238
Hull
51239
Hull District, Sioux City, Iowa Province, United States 51239
Ireton
51027
Ireton District, Sioux City, Iowa Province, United States 51027
Lebanon
51250
Lebanon District, Sioux City, Iowa Province, United States 51250
Matlock
51244
Matlock District, Sioux City, Iowa Province, United States 51244
Maurice
51036
Maurice District, Sioux City, Iowa Province, United States 51036
McNally
51027
McNally District, Sioux City, Iowa Province, United States 51027
Middleburg
51041
Middleburg District, Sioux City, Iowa Province, United States 51041
Newkirk
51238
Newkirk District, Sioux City, Iowa Province, United States 51238
Orange City
51041
Orange City District, Sioux City, Iowa Province, United States 51041
Perkins
51239
Perkins District, Sioux City, Iowa Province, United States 51239
Rock Valley
51247
Rock Valley District, Sioux City, Iowa Province, United States 51247
Sioux Center
51250
Sioux Center District, Sioux City, Iowa Province, United States 51250