Post Offices List in Lynden City, Washington:
| Lynden Post Office | 600 Front St, Lynden, WA 98264 |
| Lynden Carrier Annex Post Office | 114 S Duffner Dr, Lynden, WA 98264 |
| Lynden Post Office | 600 Front St, Lynden, WA 98264 |
| Lynden Carrier Annex Post Office | 114 S Duffner Dr, Lynden, WA 98264 |