Post Offices List in San Juan County, Washington:
| Deer Harbor Post Office | 20 Jack And Jill Pl, Deer Harbor, WA 98243 |
| Eastsound Post Office | 221 A St Ste 1, Eastsound, WA 98245 |
| Friday Harbor Post Office | 220 Blair Ave, Friday Harbor, WA 98250 |
| Lopez Island Post Office | 209 Weeks Rd, Lopez Island, WA 98261 |
| Orcas Post Office | 121 Killebrew Lake Rd, Orcas, WA 98280 |
| Shaw Island Post Office | 35 Blind Bay Rd, Shaw Island, WA 98286 |
| Waldron Post Office | 1 S Burn Rd, Waldron, WA 98297 |
| Blakely Island Post Office | 1 Blakely Is, Blakely Island, WA 98222 |