P.O. Box 3755
Seattle, WA 98124-2255
Phone: (888) 226-7688
Directions & Lake History/Factoid
Directions: Located on Highway 20, 3 miles south of Coupville on Whidbey Island, Island County, Washington.
Factoid: Operated as part of Fort Casey State Park. Fort Casey State Park (including Keystone Spit) is comprised of 411.46 acres with 7,000 feet of freshwate frontage and 110,810 feet of saltwater shoreline on Admiralty Inlet.
Age & Disability Discount Passes
U.S. Army Corps of Engineers COVID-19 Recreation Services Status
Please see the list below for USACE managed areas. Other parks run by state or private marinas are not included in the list below. Please contact the state or private marina for additional information. Updated: 3/28/23
2 Recreation areas at Keystone Harbor
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|T||Pull Through Campsites|
|C||Fish Cleaning Stations|
|GS||Group Picnic Shelter|
|B||Bike Trails |
|I||Hiking Trails - Interpretive|
|R||Off Road Vehicle Trails|
|S||Snow Mobile Trails|
|CC||Cross Country Skiing Trails|
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