A family will consume varying amounts of food, depending on their dietary habits and the age of those in the family. The typical family of four in America on average need about $200 a week to spend on groceries. It's difficult to divide that into specific food categories since every family eats differently, but that average cost is a good thinking point on how much food is consumed.
Each household in America has varying needs of nutrition. If you're part of a family that has seven members, your food intake is going to be a lot more than a family with only three members. Monetarily, the average food cost for a household in America annually is roughly $5,000.