10 Interesting Facts About Hillsboro
Facts About Hillsboro Hillsboro is the fifth-largest city in the U.S. state of Oregon and is the county seat of Washington County. The first people of the Tualatin Valley were the Atfalati or Tualaty tribe of the Kalapuya, who inhabited the region for up to 10,000 years before white settlers arrived. Hillsboro was incorporated as …