Malden is a town in Whitman County, eastern Washington, United States. The population was 216 at the 2020 census. 80 percent of the buildings were destroyed by a wildfire on September 7, 2020. Malden was officially incorporated on December 20, 1909. Established as a station stop, it was named by railway officials after Malden, Massachusetts. The rural to…Malden is a town in Whitman County, eastern Washington, United States. The population was 216 at the 2020 census. 80 percent of the buildings were destroyed by a wildfire on September 7, 2020. Malden was officially incorporated on December 20, 1909. Established as a station stop, it was named by railway officials after Malden, Massachusetts. The rural town had a small population.