By contrast, the student and auto loan category has advanced at a more rapid 8.2 percent over the past year, nearly four times the pace of gains in credit card borrowing.
A separate quarterly report on consumer credit from the Federal Reserve Bank of New York shows that student loans have been the biggest driver of consumer borrowing since the recession ended in June 2009.
The sharp rise has triggered concerns about the impact on young people trying to start careers and families while saddled with debt.
Deputy Treasury Secretary Sarah Bloom Raskin, who has made student debt one of her top priorities, met with economists this week to discuss the issue. Raskin said afterward that her goal is to "ensure that student loan debt levels do not threaten" economic activity in other areas.
The Fed's monthly credit card report does not include mortgage debt or any other loans that are secured by real estate.