Callao is located in Macon County, MO. The population is 297, making Callao the 5th largest city in Macon County.
There are 1 public schools in Callao with an average Homefacts rating of B+. The total crime rate for Callao is very low , and there are 7 registered sex offenders residing in the city. Unemployment in Callao is moderate and the median home sales price is $0. Detailed and up-to-date Callao property reports are available for any property address.
Cities near Callao include Callao Township, Bevier and Bevier Township.