City
- Alta
- Blencoe
- Carson
- Carter Lake
- Council Bluffs
- Crescent
- Glenwood
- Harlan
- Hastings
- Henderson
- Honey Creek
- Little Sioux
- Logan
- Malvern
- Missouri Valley
- Modale
- Mondamin
- Neola
- Oakland
- Sidney
- Tabor
- Treynor
- Underwood
- Woodbine
County
Zip Code
- 51002
- 51501
- 51503
- 51510
- 51523
- 51525
- 51526
- 51534
- 51537
- 51540
- 51541
- 51542
- 51545
- 51546
- 51551
- 51555
- 51556
- 51557
- 51559
- 51560
- 51575
- 51576
- 51579
- 51652
- 51653