Food retail is a key setting that influences the diets and health of children and families. The healthfulness of foods and beverages found in retail food stores differs widely across the United States, both by location of the store as well as by store type. Food retail outlets include supercenters/big box stores, supermarkets, grocery stores, corner stores, bodegas/tiendas, convenience stores, farmers’ markets, dollar stores, drug stores, restaurants, and online food shopping. Research in this area focuses on investigating strategies to improve the availability, accessibility, affordability, and demand for healthier products.