The unemployment rate for people ages 20 to 24 fell to 8.9 percent, the lowest level since April 2008. Younger workers have had a hard time finding jobs since the Great Recession officially began 7 1/2 years ago. Their unemployment rate has been stuck in double digits for most of that time.
In August, unemployment rates also fell for recent veterans and Asians but rose for black Americans and teenagers.
Overall, U.S. employers added 173,000 jobs last month. The national unemployment rate fell to 5.1 percent, a level that the Federal Reserve regards as consistent with a normal economy.
The data for various demographic groups came from a survey of households that is part of the Labor Department's monthly jobs report.
Unemployment rate by group:
(Numbers in percentages) Aug. 2015 July 2015 Aug. 2014