
Gillespie County
- State:
- Texas
- County Seat:
- Fredericksburg
Gillespie County's estimated 2025 population is 28,197 with a growth rate of 0.83% in the past year according to the most recent United States census data. Gillespie County is the 99th largest county in Texas. The 2010 population was 24,875 and has seen a growth of 13.35% since that time.