Treynor

ZIP Code(s): 51575; County(s): Pottawattamie;

Walnut

ZIP Code(s): 51577; County(s): Pottawattamie;

Underwood

ZIP Code(s): 51576; County(s): Pottawattamie;

Avoca

ZIP Code(s): 51521; County(s): Pottawattamie;

Carson

ZIP Code(s): 51525; County(s): Pottawattamie;

Council Bluffs

ZIP Code(s): 51503, 51501, 51502; County(s): Pottawattamie;

Neola

ZIP Code(s): 51559; County(s): Pottawattamie;

Oakland

ZIP Code(s): 51560; County(s): Pottawattamie;

Crescent

ZIP Code(s): 51526; County(s): Pottawattamie;

Minden

ZIP Code(s): 51553; County(s): Pottawattamie;

Carter Lake

ZIP Code(s): 51510; County(s): Pottawattamie;

Shelby

ZIP Code(s): 51570; County(s): Shelby, Pottawattamie;