Washington County
Washington County is one of 36 counties in the U. S. state of Oregon. As of the 2010 census, the population was 529,710, making it the state's second most populous county. The county seat and largest city is Hillsboro. Washington County is part of the Portland-Vancouver-Hillsboro, OR-WA Metropolitan Statistical Area.
Washington County People (First 1 people) - Page 0
