Statistical Abstract of the United States
This is a good place to start when looking for any type of data. You can find information on people, places, and things. The focus is U.S., but there is some information on foreign countries as well. Use the index at the back and remember the numbers refer to table numbers, not pages. For international data, look under foreign countries in the index.
The titles in the two lists below are part of the Gale Virtual Reference Library where you'll find additional resources of marketing data. Go to GVRL, click on "Basic Search," and select "Social Science" to see a full list of titles.
American Marketplace: Demographics and Spending Patterns
The Baby Boom: Americans Born 1946 to 1964
Generation X: Americans Born 1965 to 1976
Household Spending: Who Spends How Much on What
The Millennials: Americans Born 1977 to 1994
Older Americans: A Changing Market