American households and individuals carry substantial credit card and other debt. In 2008, the average credit card debt per household was $8,329. Total US credit card debt in 2008 was $972.73 billion. Nearly 15% of US families had debt exceeding 40% of their income in 2007. College graduates have an average of $20,000 in student loan debt. Credit card debt has risen substantially for young Americans aged 18-24 and 25-34 since 1989. Nearly 1 in 5 young Americans aged 18-24 are in debt hardship. The summary provides key statistics on American credit card and other debt levels.