Tokio is a area in Adams County, Washington.
The old town of Tokio had many names before its current one; Ione, Plainsville, and Siyption. In 1998, a huge field fire about 89,000 acres burned down the last remaining buildings: train depot, general store, and a old town house. The towns population peak was about 550. Today all that is left of the town is a cellar from the old train depot.
There are grain elevators today used by farmers in the area along the East Danekas Road.