Alder, Washington
Alder is a census-designated place in Pierce County, Washington, United States. The population was 227 at the 2010 census.
Description
The community is located along the shore of Alder Lake on State Route Highway 7 near the entrance to Mount Rainier National Park.A post office called Alder was established in 1902, and remained in operation until 1975. The community was named for the alder trees near the original town site.