Alderdale, Washington
Alderdale is an extinct town in Klickitat County, in the U.S. state of Washington. The GNIS classifies it as a populated place.
A post office called Alderdale was established in 1907, and remained in operation until 1962. In 1917 it was reported as a station on the Spokane, Portland and Seattle Railway. The community took its name from nearby Alder Creek.
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| 1900 | Unknown | ||
| 1910 | Unknown | ||
| 1920 | 327 | ||
| 1930 | Unknown | ||
| 1940 | Unknown | ||
| 1950 | Unknown | ||
| 1960 | Unknown | ||
| 1970 | Unknown | ||
| 1980 | Unknown | ||
| 1990 | Unknown | ||
| 2000 | Unknown | ||
| 2010 | Unknown | ||
| 2020 | Unknown | ||
| 2023 | Unknown |