Many books and articles on generational differences are long on subjective observations but short on hard data. Others poll a small segment of people and attempt to draw broad conclusions. With the age of Big Data upon us, that no longer needs to be the case. In these pages, you’ll find the results of generational analyses spanning twenty-four datasets including thirty-nine million people—nearly as many people as live in California, the most populous state in the U.S. With so much data, it’s possible to get a better understanding of generational differences than ever before.

