Clayton, Washington — Located in Stevens County, Washington, the unincorporated community of Clayton sits along U.S. Route 395 just northwest of Deer Park. Established in 1889 and named for nearby clay deposits, it holds ZIP code 99110 and has served the local area for over a century.This page organizes FFL dealer listings associated with Clayton, Washington within the directory’s location hierarchy. Visitors can keep browsing focused on the named place, move through its surrounding geography, and open individual listings for record-specific information. The page remains centered on the location itself while the catalogue can change independently. Use the hierarchy to return to broader place pages or continue toward a more specific community. Each step keeps the browsing path anchored to a named place and its surrounding geographic context.