Azusa
- County:
- Los Angeles County
- County Seat:
- No
- Area (mi²):
- 9.661
- State:
- California
Azusa is a city located in Los Angeles County, California. Azusa has a 2026 population of 48,383. Azusa is currently declining at a rate of -0.38% annually and its population has decreased by -3.63% since the most recent census, which recorded a population of 50,204 in 2020.