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What is the Open Space Plan?
The King County Open Space Plan: Parks, Trails, and Natural Areas (Open Space Plan) is a functional plan of the King County Comprehensive Plan. Updated every six years, it provides the policy framework for how the county plans, develops, manages, and expands its complex system of 205 parks, 175 miles of regional trails, and 32,000 acres of open space. The Open Space Plan also enables King County to be eligible for certain federal and state grants, such as from the state Recreation and Conservation Office. This plan must be adopted by the King County Council.

2022 Update – Timeline
King County Council will consider final approval of the 2022 Open Space Plan Update at their meeting on Sept. 27, 2022. The timeline below shows the plan update process to date.

Conduct internal review

Q2 - Q4 2021

Gather public input
Q3 2021
Present public review draft
(including SEPA)
Q4 2021 - Q1 2022
Finalize draft plan
Q1 - Q2 2022
Transmit draft plan to King County Council
Q2 2022
Council review and adoption
Q3 2022


2022 King County Open Space Plan

2022 King County Open Space Plan (32 MB) 

2016 King County Open Space Plan (27 MB)

2010 King County Open Space Plan (45 MB)

2004 King County Open Space Plan (4 MB)