Average Grocery Bill by Family Size (USDA 2026)

The BLS Consumer Expenditure Surveys ask households what they spend. These are 2024 averages for all households of each size, in 2024 dollars, so they mix ages, incomes and how often people eat out.

For September 2026, USDA's Thrifty Food Plan budget is about $305-$383 a month for one adult, $630 for two adults and $1,024 for a family of four. The Moderate-Cost Plan is about $404-$478, $808 and $1,389.

These are practical monthly estimates for food prepared at home. The one-person and two-adult examples use USDA's published household-size adjustment rules; the family-of-four line uses a male and female adult ages 20–50 plus children ages 6–8 and 9–11. Adult ranges show female-to-male estimates; two adults means one of each.

The average household of four spends less on groceries than USDA's Thrifty Plan, but more on food overall once eating out is counted. USDA prices a diet where every meal and snack is cooked at home; real households buy some of those meals elsewhere.

The survey households are also not USDA's reference family. A household of four in the BLS data can be two adults and two toddlers, or four adults, and the averages are in 2024 dollars rather than September 2026 prices.

A monthly grocery benchmark is only useful if it becomes a weekly plan. Divide the monthly target by 4.33, then decide how much of that weekly number needs to cover dinners versus breakfast, lunch and snacks. Budget separately for non-food household supplies and meals bought away from home.

For a family of four using the USDA Thrifty reference budget, the monthly benchmark is about $1,024. That is roughly $236 per week for all food at home. If dinners are the pressure point, the dinner plan needs to share ingredients instead of treating every night as a separate shopping trip.

USDA Food Plans are not a moral scorecard. They are a benchmark for food prepared at home. A household with teenagers, special diets, high local prices, more convenience foods, or lots of food away from home can spend more than the benchmark and still be making reasonable choices.

Actual spending comes from the BLS Consumer Expenditure Surveys 2024, Table 1400 (size of consumer unit), the latest annual release available when checked October 26, 2026. Monthly figures divide the published annual means by 12 and round to the nearest dollar: food at home $3,395, $6,088, $7,597, $8,697 and $10,274 a year for households of one to five or more; all food $5,644, $10,158, $12,205, $14,543 and $15,605.

USDA Food Plan figures are from the September 2026 Cost of Food at Home reports. The family-of-four reference household is male and female ages 20-50 plus two children ages 6-8 and 9-11. USDA states these costs assume all meals and snacks are prepared at home. The exact Thrifty reference figures are $1,024.00 per month and $236.30 per week; Low-Cost, Moderate-Cost and Liberal family totals sum USDA's published individual costs.

One- and two-person examples apply USDA's household-size adjustment guidance: add 20% for one-person households and 10% for two-person households. Monthly and weekly values are rounded independently to the nearest dollar.

SummitPlate planning guidance translates the benchmark into a weekly dinner plan. It is not financial advice and does not guarantee a specific grocery bill.