"On the heels of a strong holiday shopping season, our data shows that consumers are charging more of their purchases, a positive sign for the credit card industry," Nidhi Verma, director of research and consulting in TransUnion's financial services business unit," said. "With a stabilized delinquency environment reflected by essentially the same delinquency rate as in Q4 2013, credit card balance growth generally reflects a healthy market with more consumers gaining access to credit and using that credit to make purchases."

TransUnion found that overall delinquency, measured as card accounts 90 days or more late, fell from 1.48% in 2013 to 1.47% in 2014, with delinquency declining across all age groups except those under age 30 where it rose by 3.7%

"The growth in originations for Q3 2014 indicates consumers in all credit tiers continue to receive more access to credit," Verma said.

While non-prime originations have increased, the average credit line for non-prime consumers is shrinking, indicating strong risk management efforts from lenders, she noted.

"More consumers have access to card credit and are using that credit," Verma said. "Moreover, the vast majority of these borrowers are managing their cards well. In all, these factors point to a healthy, well-functioning card credit marketplace."