The name Mac ranked 979th 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.
This name element appears in Gaelic-derived patronymics (names based on a father's name), such as MacDonald (son of Donald) and MacKay (son of Aodh.) It is a common nickname for people with surnames such as these.
Not only has it evolved into a personal name, it is used as a generic term of address for males, akin to ''buddy'' or ''pal.''