|• Total||3.24 sq mi (8.4 km2)|
|• Land||3.21 sq mi (8.3 km2)|
|• Water||0.03 sq mi (0.08 km2)|
|Elevation||1,237 ft (377 m)|
|Time zone||UTC-8 (Pacific (PST))|
|• Summer (DST)||UTC-7 (PDT)|
Alder is a census-designated place (CDP) in Pierce County, Washington, United States. The population was 227 at the 2010 census. The community is located along the shore of Alder Lake on State Route Highway 7 near the entrance to Mount Rainier National Park.
Alder is located at (46.787849, -122.26619).
According to the United States Census Bureau, the CDP has a total area of 3.24 square miles (8.4 km2), of which, 3.21 square miles (8.3 km2) of it is land and 0.03 square miles (0.08 km2) of it (0.83%) is water.
- "U.S. Census website". United States Census Bureau. Retrieved 2015-05-25.
- "Post Offices". Jim Forte Postal History. Retrieved 12 July 2016.
- Meany, Edmond S. (1923). Origin of Washington geographic names. Seattle: University of Washington Press. p. 3.
- "US Gazetteer files: 2014". United States Census Bureau. Retrieved 2015-05-25.