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County Information



Some of the cities, towns, and places in Jefferson County are Ashwood, Camp Sherman, Crooked River Ranch, Culver, Gateway, Geneva, Grandview, Grizzly, Horse Heaven, Kilts, Madras, Metolius, Opal City, Warm Springs, Willowdale



Jefferson County is one of the 36 counties in the U.S. state of Oregon. At the 2010 census, the population was 21,720. The county seat is Madras. The county is named after Mount Jefferson.