|Kittitas County Washington Cities/Towns - Ellensburg, Kittitas, Roslyn, South Cle Elum
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Kittitas County is a county located in the U.S. state of Washington. As of 2016, the population was 44,866. Its county seat is Ellensburg.
There are numerous interpretations of the name, which is from the language of the Kittitas Native American language. According to one source, it "has been said to mean everything from 'white chalk' to 'shale rock' to 'shoal people' to 'land of plenty'. Most anthropologists and historians concede that each interpretation has some validity depending upon the particular dialect spoken." Kittitas County officially separated from Yakima County in 1884.