
Juniata County
- State:
- Pennsylvania
- County Seat:
- Mifflintown
Juniata County's estimated 2025 population is 23,167 with a growth rate of -0.16% in the past year according to the most recent United States census data. Juniata County is the 61st largest county in Pennsylvania. The 2010 population was 24,625 and has seen a growth of -5.92% since that time.