The Financial Security Index published by Country Financial fell in February to 63.1, from 65.8 in February 2009.
The decline followed the biggest single drop in the bimonthly measure ever recorded by Country, Bloomington, Ill. In December 2009, the index had stood at 66.3.
The decline shows Americans remain unsure about their financial security, says Country.
Since December 2009, Americans rating their overall level of financial security as excellent or good sunk 5 points, from 40% to 35%, while the number who said they were able to set aside money for savings or investments fell from 46% to 43%, according to researchers at Country, Bloomington, Ill,