Mercer Island, WA, USA

The City of Mercer Island is located within King County, Washington, in the Seattle metropolitan area. Situated within Lake Washington, it is an island of approximately 6.3 square miles or 4,045 acres, of which 4,027 are land acres. Mercer Island has placed a high priority on ensuring the long-term health of its urban forest resource, and this assessment demonstrates their continued commitment to protecting, maintaining, and expanding the city’s tree canopy. The primary goal of this assessment was to provide an updated baseline and benchmark of the City’s tree canopy and interpret the results across a range of geographic boundaries. Canopy change since 2007 was also assessed to determine the extent and location of growth or decline in Mercer Island’s urban forest to better inform future management actions.


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Access the Urban Tree Canopy Assessment

Mercer Island, Washington Insights

4,045 Acres

Total Study Area


Tree Canopy Cover

1,121 Acres

Possible Planting Area