, Chief Chemist of the Department of Agriculture's Division of Chemistry (third from the right) with his staff in 1883|229x229px The standard history is Gladys L. Baker, ed.,
Century of Service: The first 100 years of the United States Department of Agriculture (U.S. Department of Agriculture, 1963).
Origins in the Patent Office Early in its history, the
American economy was largely
agrarian. Officials in the federal government had long sought new and improved varieties of seeds, plants and animals for import into the United States. In 1829, by request of
James Smithson out of a desire to further promulgate and diffuse scientific knowledge amongst the American people, the
Smithsonian Institution was established, though it did not incorporate agriculture. In 1837,
Henry Leavitt Ellsworth became
Commissioner of Patents in the
Department of State. He began collecting and distributing new varieties of seeds and plants through members of the
Congress and local agricultural societies. In 1839,
Congress established the Agricultural Division within the
Patent Office and allotted $1,000 for "the collection of agricultural statistics and other agricultural purposes." Ellsworth's interest in aiding agriculture was evident in his annual reports that called for a public depository to preserve and distribute the various new seeds and plants, a clerk to collect agricultural statistics, the preparation of statewide reports about crops in different regions, and the application of chemistry to agriculture.
Ellsworth was called the "Father of the Department of Agriculture". In 1849, the
Patent Office was transferred to the newly created
Department of the Interior. In the ensuing years, agitation for a separate bureau within the department or a separate department devoted to agriculture kept recurring. Agriculturalist
Isaac Newton was appointed to be the first commissioner. Lincoln called it the "people's department", since over half of the nation, at the time, was directly or indirectly involved in
agriculture or
agribusiness. In 1868, the department moved into the new
Department of Agriculture Building in Washington, designed by famed D.C. architect
Adolf Cluss. Located on the
National Mall between 12th Street and 14th SW, the department had offices for its staff and the entire width of the Mall up to B Street NW to plant and experiment with plants. In the 1880s, varied advocacy groups were lobbying for Cabinet representation. Business interests sought a
Department of Commerce and Industry, and farmers tried to raise the Department of Agriculture to Cabinet rank. In 1887, the
House of Representatives and
Senate passed separate bills giving Cabinet status to the Department of Agriculture and Labor, but the bill was defeated in
conference committee after farm interests objected to the addition of labor. Finally, in 1889 the Department of Agriculture was given cabinet-level status. In 1887, the
Hatch Act provided for the federal funding of
agricultural experiment stations in each state. The
Smith-Lever Act of 1914 then funded
cooperative extension services in each state to teach agriculture,
home economics, and other subjects to the public. With these and similar provisions, the USDA reached out to every county of every state.
New Deal era By the year 1933, the department was well established in Washington and very well known in rural America. In the agricultural field the picture was different. Statisticians created a comprehensive data-gathering arm in the Division of Crop and Livestock Estimates. Secretary Henry Wallace, a statistician, further strengthened the expertise by introducing sampling techniques. Professional economists ran a strong Bureau of Agricultural Economics. Most important was the agricultural experiment station system, a network of state partners in the land-grant colleges, which in turn operated a large field service in direct contact with farmers in practically every rural county. The department worked smoothly with a nationwide, well-organized pressure group, the
American Farm Bureau Federation. It represented the largest commercial growers before Congress. As late as the
Great Depression, farm work occupied a fourth of Americans. Indeed, many young people who moved to the cities in the prosperous 1920s returned to the family farm after the depression caused unemployment after 1929. The USDA helped ensure that food continued to be produced and distributed to those who needed it, assisted with loans for small landowners, and provided technical advice. Its
Bureau of Home Economics, established in 1923, published shopping advice and recipes to stretch family budgets and make food go farther. In the late 1940s, the Pollinating Insect Research unit was established as a part of the alfalfa seed production unit to study bees and other pollinators to improve pollination management.
Modern times On August 27, 2018, the USDA announced it would be providing U.S. farmers with a farm aid package totaling $4.7 billion in direct payments to American farmers. On February 7, 2022, the USDA announced the Partnerships for Climate-Smart Commodities, a $1 billion program that will test and verify the benefits of climate-friendly agricultural practices. In October 2022, the USDA announced a $1.3 billion debt relief program for about 36,000 farmers who had fallen behind on loan payments or facing foreclosures. The provisions in the
Inflation Reduction Act of 2022 set aside $3.1 billion to help such farmers with high-risk operations caused by USDA-backed loans. In February 2025, the
Trump administration fired multiple probationary employees in the USDA, including multiple researchers in the post-doctoral research fellowship in the Agricultural Research Service, a division dedicated to using science to protect the nation's food supply. The USDA said in a statement on February 14, 2025 that it is implementing "an aggressive plan to optimize its workforce by eliminating positions that are no longer necessary." However, a few days later they made another statement stating they had fired people in "several positions supporting" highly pathogenic
avian influenza, and was "working to swiftly rectify the situation and rescind" the termination letters given to these people. In March 2025, the USDA cut two federal programs that provided about $1 billion in funding to schools and food banks to buy food directly from local farms, ranchers and producers. On January 9, 2026, secretary Brooke Rollins announced that effective immediately, the USDA is suspending financial awards to the state of
Minnesota and city of
Minneapolis, in response to "widespread and systemic fraud associated with federal benefit programs". ==Organization and Component Staff Level==