From Experian's 2020 Consumer Credit Review: "Though millennials are technically the most populous generation, baby boomers still remain the age group with the most credit-active consumers, since they're the generation with the highest number of credit reports on file.
Millennials, the second-largest credit-active generation, made significant improvements in their debt and credit for a second year in a row, likely driving much of the growth in the average FICO® Score."