The Seattle District, U.S. Army Corps of Engineers main office is located at:
4735 E. Marginal Way South
Seattle, WA 98134
Mailing address:
P.O. Box 3755
Seattle, WA 98124-3755
Field Offices are located throughout the Pacific Northwest:
Field Offices
A map of district boundaries is on-line at:
http://www.nws.usace.army.mil/Locations.aspx