Nearly 80% of more than 2,100 people who responded to an online poll admitted that their personal finances keep them awake at night, according to the National Foundation of Credit Counseling in Washington.

The NFCC's Financial Literacy Opinion Index posted on its website, debadvice.org, throughout July was answered by 2,148 individuals. The index, however, is not a scientific survey, NFCC said.

Interestingly, when respondents were asked “What keeps you up at night?” 13% said, “Nothing, I sleep like a baby,” which was the second highest number of responses, according to NFCC.

Only 4% of respondents said job security kept them up at night and only 2% said marital concerns and problems with children left them sleepless.

The 2014 NFCC Financial Literacy Survey also revealed that 71% of consumers, or roughly 179 million people, admitted to having personal finance worries with not enough savings, job issues, debt, and credit topping the list. That survey was conducted in March by Harris Poll among 2,016 Americans aged 18 and older.

The NFCC is the nation's largest and longest serving national nonprofit financial counseling organization.