Rosburg is a Census-designated place (CDP) in Wahkiakum County, Washington, United States. Rosburg is located on the Grays River near Washington State Route 4, 15 miles (24 km) northwest of Cathlamet. Rosburg has a post office with ZIP code 98643.[2] The CDP includes the communities of Eden and Oneida.
Christian Rosburg, the town's first postmaster, named Rosburg for himself.[3]
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| post code | city | state | latitude | longitude |
|---|---|---|---|---|
| 98643 | Rosburg | WA | 46.314316 | -123.648311 |