Sources are the Federal Reserve Bank of New York page Student loan debt by age group and report Household Debt and Credit: Student Debt.
As of 2012 the share of debt held by age group is as follows:
age group | % of debt |
60+ | 5% |
50-59 | 12% |
40-49 | 17% |
30-39 | 33% |
under 30 | 33% |
and graphically :
Of course that data is a few years old now but the trend is for the % of debt held by people under 30 to be dropping. In 2005 the under 30 group held about 40% of the debt.
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