According to the USDA as of May 2014, males who are 19 to 50 years old spend a monthly average of $ 187.70 to $372.70 on groceries, and females of the same age group spend anywhere from $167.10 to $331.80. These figures can increase or decrease drastically based on a variety of factors, including family size, gender, age and spending plan.
The USDA also reports that families of two people tend to spend between between $390.30 and $775.00 a month on groceries. For families of four with two parents and two young children, the cost of groceries can jump from $568.40 to $1,109.20 per month . This price rises along with the children's ages.