This report provides statistics on food security in U.S. households throughout 2020 based on the Current Population Survey Food Security Supplement data collected in December 2020.   An estimated 89.5 percent of U.S. households were food secure throughout the entire year in 2020, with access at all times to enough food for an active, healthy life for all household members. The remaining households (10.5 percent, unchanged from 10.5 percent in 2019) were food insecure at least some time during the year, including 3.9 percent with very low food security (not significantly different from 4.1 percent in 2019). Very low food security is the more severe range of food insecu-rity where one or more household members experienced reduced food intake and disrupted eating patterns at times during the year because of limited money and other resources for obtaining food. Although the prevalence of food insecurity and very low food security for all households remained unchanged from 2019, some subgroups experienced increases in food insecurity and very low food security. For example, among children, food insecurity and very low food security increased signifi-cantly from 2019. Children and adults were food insecure in 7.6 percent of U.S. households with children in 2020 (up from 6.5 percent in 2019); very low food security among children was 0.8 percent (up from 0.6 percent in 2019). In 2020, the typical food-secure household spent 18 percent more on food than the typical food-insecure household of the same size and household composi-tion. About 55 percent of food-insecure households participated in one or more of the three largest Federal nutrition assistance programs: Supplemental Nutrition Assistance Program (SNAP, formerly food stamps); Special Supplemental Nutrition Program for Women, Infants, and Children (WIC); and the National School Lunch Program during the month prior to the 2020 survey. Because of the coronavirus (COVID-19) pandemic, USDA granted States significant program flexibilities and contingencies to serve nutrition assistance program participants. The prevalence of food insecurity in the 30-day period from mid-November to mid-December 2020 was 5.7 percent for the Nation. Food insecurity was substantially higher for households with a householder or reference person (an adult household member in whose name the housing unit is owned or rented) who was unable to work because of the pandemic (16.4 percent food insecure in the 30-day period from mid-November to mid-December 2020) and households with a reference person who was not employed and was prevented from looking for work because of the pandemic (20.4 percent food insecure in the same 30-day period).