Salkum, WA is a city located in Lewis County, Washington and has a land area of 5.84 square miles (15.13 km2). The water area for the city is 0.18 square miles or 0.47 km2. There is one unique zip code in Salkum, Washington and it is 98582. The area code(s) for Salkum is 360/564.
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