
Hillsboro
- County:
- Washington County
- County Seat:
- Yes
- Area (mi²):
- 25.843
- State:
- Oregon
Hillsboro is a city located in Washington County, Oregon. Hillsboro has a 2025 population of 108,223. It is also the county seat of .Hillsboro is currently growing at a rate of 0.23% annually and its population has increased by 1.15% since the most recent census, which recorded a population of 106,990 in 2020.
The average household income in Hillsboro is $128,703 with a poverty rate of 8.15%. The median age in Hillsboro is 34.8 years: 34.2 years for males, and 35.6 years for females.