WASHINGTON (Dow Jones)--The U.S. unemployment rate unexpectedly declined in January, but the economy continued to shed jobs and revisions painted a bleaker picture for 2009, casting doubt over the labor market's strength.

The unemployment rate, calculated using a household survey, fell to 9.7% last month from an unrevised 10% in December, the Labor Department said Friday. Economists surveyed by Dow Jones Newswires had forecast the jobless rate would edge higher to 10.1%.