Matlock is an unincorporated community in Mason County, Washington, United States.^[1] Matlock is the primary population center for the western part of Mason County, a sporadically populated logging area. The most notable sites are the church, food bank, general store, post office, local grange hall, and the Mary M. Knight school, grades kindergarten through senior high school.

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Matlock
Unincorporated community
Matlock Show map of Washington (state) Matlock Show map of the United States
Coordinates: 47°14′18″N 123°24′28″W
Country	United States
State	Washington
County	Mason
Area
• Total	21.6615 sq mi (56.103 km2)
• Land	21.6557 sq mi (56.088 km2)
• Water	0.0058 sq mi (0.015 km2)
Population  (2023)
• Total	98
Time zone	UTC-8 (Pacific (PST))
• Summer (DST)	UTC-7 (PDT)
ZIP code	98560
Area code	360

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Matlock features nearby lakes and recreational opportunities, including fishing, hiking, hunting, and horseback riding. The nearest lake to Matlock is Lake Nahwatzel. Every year during the first full weekend in May, Matlock hosts the Old Timers' Fair at Mary M. Knight School campus. The fair features food, crafts and tractors. Matlock is located northwest of Olympia, Washington, about a 20-minute drive from the county seat, Shelton. Matlock is a secluded little town just outside of Shelton and Elma. Matlock is also home to Mason County Fire District 12.

Matlock has high annual precipitation 87 inches (220 cm) due to strong influence from the nearby Pacific. A significant drying trend occurs in summer, giving Matlock a warm-summer Mediterranean climate (Csb) according to the Köppen climate classification system.