Rainier Valley and Hillman City beginnings: Hillman Post Office (later Hanford) opens on March 30, 1904.

  • By Greg Lange
  • Posted 1/01/1999
  • HistoryLink.org Essay 589
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On March 30, 1904, Hillman Post Office opens within the future city limits of Seattle. Martin Coltenbaugh is appointed postmaster. Hillman City is part of the Rainier Valley and is located four miles southeast of downtown Seattle.

The post office may have been located near the corner of Rainier Avenue S and S Orcas Street. Its name changed to Hanford Post Office on May 4, 1906.

Sources: Guy Reed Ramsey, "Postmarked Washington, 1850-1960," Microfilm (Olympia: Washington State Library, February, 1966), 678.
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