Its source is a Latin expression meaning "Soldier."
The name Milo ranked 889th in popularity for males of all ages in a sample of 2000-2003 Social Security Administration statistics and 960th in popularity for males of all ages in a sample of the 1990 US Census.
Though this name appears on the 1990 U.S. Census lists, it is used by only a small percentage of the general population.
Latin may be the source of the Germanic form, Milo, that this name assumed in the Middle Ages. Nothing is certain about this derivation, however, and speculation on the ultimate source ranges from the Hebrew name Michael to the Slovonic name element mil (grace).