This is the final Washington State Recovery Plan for the Western Gray Squirrel. It summarizes the historic and current distribution and abundance of western gray squirrels in Washington and describes factors affecting the population and its habitat. It prescribes strategies to recover the species, such as protecting the population and existing habitat, evaluating and restoring habitat, potential reintroduction of western gray squirrels into vacant habitat, and initiating research and cooperative programs. Interim target population objectives and other criteria for reclassification are identified.