Ellensburg is a city in and the county seat of Kittitas County, Washington, United States. It is located just east of the Cascade Range at the junction of Interstate 90 and Interstate 82. The population was an estimated 21,111 as of 2019. The city is located along the Yakima River in the Kittitas Valley, an agricultural region that extends east towards the Columbia River. The valley is a major producer of timothy hay, which is processed and shipped... Show more

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