Hillsboro
- County:
- Hill County
- County Seat:
- Yes
- Area (mi²):
- 10.983
- State:
- Texas
Hillsboro is a city located in Hill County, Texas. Hillsboro has a 2026 population of 8,878. It is also the county seat of Hill County. Hillsboro is currently growing at a rate of 1.8% annually and its population has increased by 8.35% since the most recent census, which recorded a population of 8,194 in 2020.