A small farm is generally defined as an agricultural operation that brings in less than $250,000 to $350,000 in annual gross income, though the exact threshold depends on who’s doing the defining. In the United States, small farms make up the vast majority of all farming operations, about 86 percent, yet they produce only a fraction of the country’s food. Understanding what qualifies as “small” matters if you’re thinking about starting a farm, applying for government programs, or simply trying to make sense of how American agriculture is structured.
How the USDA Defines a Small Farm
The USDA has historically defined a small farm as one with gross cash farm income (GCFI) under $250,000. The Economic Research Service uses a slightly higher cutoff of $350,000 for its farm typology system, which groups farms into categories for policy and research purposes. Either way, the definition is based on revenue, not acreage. A 500-acre grain operation and a 5-acre vegetable farm could both qualify as small if neither crosses the income threshold.
To be counted as a farm at all, an operation needs enough land or livestock to potentially generate $1,000 in sales, whether or not it actually reaches that number in a given year. This is why the USDA’s farm count includes a large number of very low-revenue operations. In fact, the fastest-growing segment of small farms in recent years has been those with less than $1,000 in annual sales, many of which are essentially rural landowners with a few animals or a garden plot.
The Different Types of Small Farms
Not all small farms look the same, and the USDA breaks them into several sub-categories that reveal how differently these operations function.
Retirement farms are run by operators who have officially retired but continue farming on a small scale. Off-farm occupation farms are operated by people whose primary income comes from a non-farming job. This is the most common type, and roughly 18 percent of operators in this group don’t consider themselves part of the labor force at all. Farming-occupation farms are the ones most people picture when they think of a small farm: the operator’s primary job is farming. These are further divided into low-sales farms (under $150,000 in gross income) and moderate-sales farms ($150,000 to $349,999).
The distinction matters because a retirement farm with a few head of cattle and an intensive vegetable operation selling $200,000 worth of produce at farmers markets are both “small farms,” but they face completely different challenges and have very different relationships with the agricultural economy.
How Much Land Small Farms Actually Cover
Because the USDA uses income rather than acreage, small farms range enormously in size. Some of the most productive small operations are market gardens, which can be as compact as one to two and a half acres. A one-acre market garden growing a typical mix of vegetables requires roughly 1,724 labor hours over a 40-week growing season, making it extremely labor-intensive per acre but viable as a full-time operation. On the other end, a small cattle ranch might span hundreds of acres while still falling under the income threshold.
Collectively, small family farms operated on 41 percent of all U.S. agricultural land in 2023. That’s a huge footprint for operations that generated just 17 percent of the total value of agricultural production. The gap between land use and production value reflects the reality that many small farms are managed less intensively than large commercial operations, or are focused on livestock grazing, which requires more land per dollar of output.
Small Farms Globally
Outside the United States, the picture shifts dramatically. The Food and Agriculture Organization of the United Nations counts more than 570 million farms worldwide, and most are small and family-operated. Globally, a “smallholder” farm is typically defined as one working less than 2 hectares (about 5 acres). These small operations manage roughly 12 percent of the world’s agricultural land, while family farms of all sizes account for about 75 percent. In many developing countries, smallholder farms are the backbone of local food systems in a way that American small farms generally are not.
Profitability and Financial Reality
Small farms are less likely to be profitable than larger operations, a pattern that holds consistently across farm types. One key measure is the operating profit margin: the share of gross income that remains after expenses. Farms with an operating profit margin below 10 percent are considered to be in a financial “critical zone,” signaling potential problems.
Among small farms where the operator’s primary job is farming and sales are moderate ($150,000 to $349,999), about 33 percent achieve a healthy profit margin of 20 percent or higher. That drops to 16 percent for low-sales farming-occupation farms, and just 14 percent for off-farm occupation farms. By comparison, 58 to 64 percent of large and very large family farms hit that same 20 percent margin. The economics of scale in agriculture are steep: larger operations spread fixed costs over more production, giving them a structural advantage.
That said, profitability isn’t the only reason people run small farms. Many operators value the lifestyle, the connection to land, or the ability to produce food for local markets. For retirement and off-farm occupation farms, the operation may function more like a supplemental activity or a tax strategy than a primary business.
Trends in Small Farm Numbers
The total number of farms in the United States has been declining. The 2022 Census of Agriculture counted 1.9 million farms and ranches, a 7 percent drop from 2017. Small commercial farms, those with sales between $10,000 and $250,000, have been shrinking as a group for over a decade. The growth has come almost entirely from the smallest category: operations with under $1,000 in sales. This means the “small farm” label increasingly covers two very different realities. One is a shrinking pool of working farms trying to compete economically. The other is a growing number of very small landholdings that technically qualify as farms but function more like rural homesteads.
Federal Programs for Small Farms
The USDA operates several programs specifically aimed at supporting small and mid-sized farms. The Natural Resources Conservation Service works with farmers of all sizes on land and water management, and its Seasonal High Tunnel Initiative helps smaller operations extend their growing seasons using simple greenhouse-like structures. Pilot projects in five states help small farms achieve Good Agricultural Practice certification, which can open the door to selling to grocery chains and institutional buyers that require food safety verification.
The Socially Disadvantaged Groups Grant program provides technical assistance to small producers from historically underserved communities through cooperatives. In twenty states, USDA StrikeForce teams focus specifically on rural areas with persistent poverty, where small farmers often need the most support to access capital, markets, and technical knowledge. Eligibility for these programs generally hinges on farm size, income, and location rather than what you grow or how you grow it.