That can't be answered precisely from these data. Not everyone in those households was hungry, however. Households are classified based on whether anyone in the household was hungry because of lack of resources. In this survey, it is not possible to ask separately about the experience of each person in the household. Most of the adults in these households were hungry at times during the year, but most of the children were not.
Work is underway to estimate the prevalence of hunger among children.
The Census Bureau conducts the CPS monthly for the Bureau of Labor Statistics, interviewing about 50,000 households each month. Once each year, after completing the labor-force interview, households are asked a series of questions about food expenditures, use of Federal food programs, and behaviors and experiences known to characterize households having difficulty meeting their food needs. Food security status is assessed by a series of 18 questions that ask about behaviors and experiences across a wide range of severity of food insecurity. For example, the least severe question asks whether respondents worried that their food would run out before they got money to buy more. A question at a somewhat more severe level asks whether they were unable to afford to eat balanced meals.