Without looking it up, I believe farm corporations owned exclusively by relatives are not officially considered corporate farms by the USDA, for good reason. Family corporations are pretty much the norm where farming is actually the main source of income.
JR Simplot is a family owned farming operation. Would you consider it a corporate farm? It a privately held company owned by the Simplot family
Simplot
The J. R. Simplot Company (commonly referred to as Simplot) was founded in 1929 by 20-year-old John Richard Simplot near the small agricultural community of Declo in south central Idaho. During the early 1940s the business expanded, serving the military dehydrated onions and potatoes during World War II. The firm was legally incorporated as the J. R. Simplot Company in 1955.
Company founder J. R. Simplot (1909-2008)
Simplot made billions from the commercialization of frozen french fries by one of its scientists, chemist Ray L. Dunlap. By the early 1970s it was the primary supplier of french fries to McDonald’s; by 2005 it supplied more than half of all french fries for the fast food chain. Simplot also produces fertilizers for agriculture the mining of which has been a cause of recent environmental concerns.
Simplot is now one of the largest privately owned companies in the world (ranked 59th in Private Companies by Forbes magazine in 2004) and has branches in Australia, Canada, Mexico, China, and several other regions. One of the major plants is in Caldwell, Idaho.
A view of the Simplot plant in Caldwell, Idaho, circa 1930-1945. The caption in the image states “World’s Largest Dehydrating Plant.”
J. R. Simplot retired as president of his company in 1973, but remained involved for many years. He stepped down as chairman of the board in 1994, and held the title of Chairman Emeritus until his death in 2008