Post Offices List in Dukes County, Massachusetts:
| Chilmark Post Office | 4 State Rd, Chilmark, MA 02535 |
| Cuttyhunk Post Office | 13a Broadway, Cuttyhunk, MA 02713 |
| Edgartown Post Office | 236b Edgartown Rd, Edgartown, MA 02539 |
| Oak Bluffs Post Office | 24e Kennebec Ave, Oak Bluffs, MA 02557 |
| Vineyard Haven Post Office | 1 Lagoon Pond Rd, Vineyard Haven, MA 02568 |
| West Tisbury Post Office | 479 State Rd, West Tisbury, MA 02575 |