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For counties in the state of Washington, see List of counties in Washington.
Washington County is the name of 30 counties and one parish in the United States of America. In total, the following 32 states and one district have or had a Washington County:
- Washington County, South Dakota, a former county (1883–1943) that was sliced up and then merged into Jackson County, Pennington County, and Shannon County in 1943 because of financial troubles in South Dakota
- Washington County, District of Columbia, a former county of the District of Columbia that was abolished in 1871 along with all of the other counties in that District
- Washington County (album), a 1970 album by Arlo Guthrie
|This disambiguation page lists articles associated with the title Washington County.
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