
Callao
- County:
- Macon County
- County Seat:
- No
- Area (mi²):
- 0.517
- State:
- Missouri
Callao is a city located in Macon County, Missouri. Callao has a 2025 population of 246. Callao is currently declining at a rate of -0.4% annually and its population has decreased by -1.6% since the most recent census, which recorded a population of 250 in 2020.
The average household income in Callao is $56,193 with a poverty rate of 11.45%. The median age in Callao is 36.9 years: 47.5 years for males, and 35.5 years for females.