美国邮政编码列表
| 州 | 城市 | 邮政编码 |
|---|---|---|
| IA | Audubon | 50025 |
| IA | Bagley | 50026 |
| IA | Barnes City | 50027 |
| IA | Baxter | 50028 |
| IA | Bayard | 50029 |
| IA | Beaver | 50031 |
| IA | Berwick | 50032 |
| IA | Bevington | 50033 |
| IA | Blairsburg | 50034 |
| IA | Bondurant | 50035 |
| IA | Boone | 50036 |
| IA | Boone | 50037 |
| IA | Booneville | 50038 |
| IA | Bouton | 50039 |
| IA | Boxholm | 50040 |
| IA | Bradford | 50041 |
| IA | Brayton | 50042 |
| IA | Buckeye | 50043 |
| IA | Bussey | 50044 |
| IA | Cambridge | 50046 |