
Harper
- County:
- Gillespie County
- County Seat:
- No
- Area (mi²):
- 56.573
- State:
- Texas
Harper is a CDP located in Gillespie County, Texas. Harper has a 2025 population of 1,219. Harper is currently growing at a rate of 0.08% annually but its population has decreased by -12.37% since the most recent census, which recorded a population of 1,391 in 2020.
The average household income in Harper is $106,874 with a poverty rate of 8.01%. The median age in Harper is 27.1 years: 23.7 years for males, and 31.8 years for females.