The percentage of U.S. families suffering from hunger was estimated at 5.4% in 2010, down slightly from 5.7% in 2009, a new U.S. Department of Agriculture report said.

In 2010, 17.2 million households in the U.S. had difficulty providing enough food due to a lack of resources, similar numbers to 2009 and 2008.

The report said food insecurity rates were highest for households with incomes near or below the current federal poverty line, households with children headed by single women or single men, and black and Hispanic households.

The USDA said that 59% of all food-insecure households participated in one or more of the three largest nutrition assistance programs at the time of the survey. Those programs are the Supplemental Nutrition Assistance Program, the National School Lunch Program and the Special Supplemental Nutrition Program for Women, Infants and Children.