More than a third of all Americans , or 36 percent, have not saved any money for retirement, according to a new www.bankrate.com report.

Sixty-nine percent of 18-29 year-olds haven't saved anything, along with 33 percent of 30-49 year-olds, 26 percent of 50-64 year-olds and 14 percent of people 65 and older.

The good news is that Americans who are saving are starting earlier. Twice as many 30-49 year-olds started saving in their 20s as opposed to their 30s.

But 50-64 year-olds were only slightly more likely to have started saving in their 20s than their 30s, and Americans 65 and older were almost evenly split between starting in their 20s, 30s and 40s.

“Regardless of age, there is no better time than the present to start saving for retirement,” says Bankrate.com chief financial analyst Greg McBride, CFA. “The key to a successful retirement is to save early and aggressively, but even those on the cusp of their golden years should have some money allocated toward equities as opposed to all cash and bonds.”

Americans' feelings of financial security were unchanged from one month ago, indicating a slight improvement in their financial security compared to one year ago.

Bankrate.com's August Financial Security Index registered at 100.1. Any number above 100 illustrates improved financial security compared to one year ago, while any number below 100 reflects deteriorating financial security.

Despite their lack of retirement savings, millennials feel more financially secure than any other age group. They feel more secure in their jobs and more optimistic about their current financial situation than any other age group.

Job security, net worth and overall financial situation are all areas in which Americans note improvement over one year ago.

However, there are twice as many Americans less comfortable with their savings (compared to one year ago) as those that are more comfortable.

Men's feelings of financial security slipped, while women noted improved financial security since last month. However, men still note improved financial security compared to one year ago while women still feel a slight deterioration.

Americans' comfort level with debt remains mixed. Sentiment slipped slightly this month, as those less comfortable with debt compared to last year edged out those more comfortable.

At present, 24 percent are less comfortable while 23 percent are more comfortable than one year ago.

The survey was conducted by Princeton Survey Research Associates International (PSRAI) and can be seen in its entirety here:
http://www.bankrate.com/finance/consumer-index/financial-security-charts-0814.aspx .

PSRAI obtained telephone interviews with a nationally representative sample of 1,003 adults living in the continental United States.

Interviews were conducted by landline (501) and cell phone (502, including 309 without a landline phone) in English and Spanish by Princeton Data Source from August 7-10, 2014.

Statistical results are weighted to correct known demographic discrepancies. The margin of sampling error for the complete set of weighted data is plus or minus 3.5 percentage points.