There may be some slight variations in the definitions of a specific "generation", but the following list most generally reflects the standard years ascribed to each:
More information available at the Center for Generational Kinetics
In addition to general searching in our databases, search here for specific information on different age groups.
Specific age demographic terms you can search are: Baby Boomers, Mature Adults, Generation X, Generation Y, Millennials, Generation Next, Echo Boomers, Teens, Tweens, Youth.
Search the USC Libraries Catalog to find more books on the subjects of "Older Consumers", "Young Adult Consumers" such as Gen X and Gen Y or other demographic groups.