USPS - Postal Service in Black Diamond - Locations & Hours
| Name | Address | Phone | |
|---|---|---|---|
| USPS - Post Office - Black Diamond | 25228 Baker St | 360-886-9429 | |
| USPS Mail Collection/Drop Box - 25228 Baker St | 25228 Baker St | ||
| USPS Mail Collection/Drop Box - 29006 216th Ave Se | 29006 216th Ave Se | ||