Post Offices List in Delaware County, Iowa:
| Colesburg Post Office | 204 Main St Unit A, Colesburg, IA 52035 |
| Delhi Post Office | 300 Franklin St, Delhi, IA 52223 |
| Dundee Post Office | 106 N Center St, Dundee, IA 52038 |
| Greeley Post Office | 108 E 3rd St, Greeley, IA 52050 |
| Hopkinton Post Office | 104 1st St Sw, Hopkinton, IA 52237 |
| Manchester Post Office | 116 E Delaware St, Manchester, IA 52057 |
| Masonville Post Office | 504 Barrett St, Masonville, IA 50654 |
| Ryan Post Office | 202 Main St, Ryan, IA 52330 |