Recreation AreaRecreation.gov

Keystone Harbor

Coupeville, Washington · Island County

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.

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48.17080, -122.67094
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About Keystone Harbor

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.

Plan Your Visit to Keystone Harbor

Heading to Keystone Harbor? A few things to know before you go:

  • Reservations: popular sites fill up fast — check Recreation.gov 6 months in advance
  • Fees: day-use and camping fees vary; check current rates on the official park page
  • Trash & pack-out: follow Leave No Trace principles
  • Wildlife: store food in bear boxes where provided; never feed wildlife
  • Weather: the 5-day forecast above is updated every 6 hours; verify just before you go

Frequently Asked Questions

Do I need a reservation for Keystone Harbor?

No central reservation system listed for Keystone Harbor. Check the official page (https://www.recreation.gov/recarea/253) for the latest entry policy and availability.

How do I get to Keystone Harbor?

Located on Highway 20, 3 miles south of Coupville on Whidbey Island, Island County, Washington.

How do I contact Keystone Harbor?

You can reach the park at phone: (888) 226-7688.

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