Generations

Boomers I or The Baby Boomers

Born: 1946-1954
Coming of Age: 1963-1972
Age in 2004: 50-58
Current Population: 33 million

Boomers II or Generation Jones

Born: 1955-1965
Coming of Age: 1973-1983
Age in 2004: 39 to 49
Current Population: 49 million

Generation X

Born: 1966-1976
Coming of Age: 1988-1994
Age in 2004: 28 to 38
Current Population: 41 million

Generation Y, Echo Boomers or Millenniums

Born: 1977-1994
Coming of Age: 1998-2006
Age in 2004: 10 to 22
Current Population: 71 million

Generation Z

Born: 1995-2012
Coming of Age: 2013-2020
Age in 2004: 0-9
Current Population: 23 million and growing rapidly

Millenials - They define the group as "as those born in 1982 and approximately the 20 years thereafter.