Primary Service Areas within Washington County Oregon:
Some historical area information:
Hillsboro is the fifth-largest city in the U.S. state of Oregon and is the county seat of Washington County. Hillsboro is located on the west side of the Portland metropolitan area. The city is home to many high-technology companies, such as Intel, that comprise what has become known as the Silicon Forest. As of 2009, the city's estimated population was about 90,000.