
Hillsboro
- County:
- Sierra County
- County Seat:
- No
- Area (mi²):
- 2.134
- State:
- New Mexico
Hillsboro is a CDP located in Sierra County, New Mexico. Hillsboro has a 2025 population of 188. Hillsboro is currently growing at a rate of 2.17% annually but its population has decreased by -5.53% since the most recent census, which recorded a population of 199 in 2020.
The average household income in Hillsboro is $25,713 with a poverty rate of 39.55%. The median age in Hillsboro is 69.4 years: 75 years for males, and 65.2 years for females.