Holbrook
- County:
- Navajo County
- County Seat:
- Yes
- Area (mi²):
- 17.344
- State:
- Arizona
Holbrook is a city located in Navajo County, Arizona. Holbrook has a 2026 population of 4,837. It is also the county seat of Navajo County. Holbrook is currently declining at a rate of -0.68% annually and its population has decreased by -0.21% since the most recent census, which recorded a population of 4,847 in 2020.