With a population of almost 92,000, Hillsboro is the fifth largest city in Oregon, and is the county seat of Washington County. On the west side of Portland, Hillsboro is a hub to what has become known as the Silicon Forest, with large employee bases of companies like Intel, TriQuint Semiconductor, SolarWorld, Yahoo!, and Applied Materials. The New Energy Cities program conducted a Workshop in Hillsboro, OR on March 9, 2012.