zip codes starting 5
| Ackworth, Iowa | 50001 | More |
| Adair, Iowa | 50002 | More |
| Adel, Iowa | 50003 | More |
| Albion, Iowa | 50005 | More |
| Alden, Iowa | 50006 | More |
| Alleman, Iowa | 50007 | More |
| Allerton, Iowa | 50008 | More |
| Altoona, Iowa | 50009 | More |
| Ames, Iowa | 50010 | More |
| Ames, Iowa | 50011 | More |
| Ames, Iowa | 50012 | More |
| Ames, Iowa | 50013 | More |
| Ames, Iowa | 50014 | More |
| Ankeny, Iowa | 50015 | More |
| Anita, Iowa | 50020 | More |
| Ankeny, Iowa | 50021 | More |
| Atlantic, Iowa | 50022 | More |
| Audubon, Iowa | 50025 | More |
| Bagley, Iowa | 50026 | More |
| Barnes City, Iowa | 50027 | More |
| Baxter, Iowa | 50028 | More |
| Bayard, Iowa | 50029 | More |
| Beaver, Iowa | 50031 | More |
| Berwick, Iowa | 50032 | More |
| Bevington, Iowa | 50033 | More |
| Blairsburg, Iowa | 50034 | More |
| Bondurant, Iowa | 50035 | More |
| Boone, Iowa | 50036 | More |
| Boone, Iowa | 50037 | More |
| Booneville, Iowa | 50038 | More |
| Bouton, Iowa | 50039 | More |
| Boxholm, Iowa | 50040 | More |
| Bradford, Iowa | 50041 | More |
| Brayton, Iowa | 50042 | More |
| Buckeye, Iowa | 50043 | More |
| Bussey, Iowa | 50044 | More |
| Cambridge, Iowa | 50046 | More |
| Carlisle, Iowa | 50047 | More |
| Casey, Iowa | 50048 | More |
| Chariton, Iowa | 50049 | More |
| Churdan, Iowa | 50050 | More |
| Clemons, Iowa | 50051 | More |
| Clio, Iowa | 50052 | More |
| Colfax, Iowa | 50054 | More |
| Collins, Iowa | 50055 | More |
| Colo, Iowa | 50056 | More |
| Columbia, Iowa | 50057 | More |
| Coon Rapids, Iowa | 50058 | More |
| Cooper, Iowa | 50059 | More |
| Corydon, Iowa | 50060 | More |
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