The Hillsboro Civic Center is a government-built, mixed-use development in downtown Hillsboro, Oregon, United States. The development includes the city hall for the county seat of Washington County, located west of Portland, Oregon. Covering 6 acres (24,000 m²), the Civic Center has a total of over 165,000 square feet (15,300 m²) in the complex. The total of six stories for the main structure makes the building the tallest in the city, tied with Tuality Community Hospital. In addition to government offices, the Civic Center includes retail space, public plazas, and residential housing.