Callao Map
Callao is a city in Macon County, Missouri, United States. The population was 292 at the 2010 census.
According to the United States Census Bureau, Callao has a total area of 0.5 square miles (1.3 km²), all of it land.
As of the census of 2010, there were 292 people, 117 households, and 78 families residing in the city. The population density was 580.0 people per square mile (224.7/km²). There were 152 housing units at an average density of 303.0 per square mile (117.4/km²). The racial makeup of the city was 99.31% White, 0.34% Native American, and 0.34% from two or more races.
Nearby cities include Atlanta, Bucklin, Marceline, La Plata, Clarence.