J.R. Simplot was an American entrepreneur, farmer, and industrialist who had a net worth of approximately $3.7 billion at the time of his death. Best known as the founder of the J.R. Simplot Company, he built one of the largest agribusiness empires in the United States and became one of the most influential figures in global agriculture.
Simplot’s rise from a school dropout to a billionaire industrialist remains one of the most remarkable American business stories of the 20th century. By the early 1980s, he was already worth hundreds of millions of dollars, largely due to his dominant role in supplying potatoes to McDonald’s. Within a few years, he officially became a billionaire and later held the title of Idaho’s richest resident.
At the time of his death in 2008 at age 99, Simplot was also recognized as one of the oldest billionaires in American history.
- R. Simplot Net Worth: $3.7 Billion
- Date of Birth: Sep 15, 1951
- Place of Birth: San Francisco
- Nationality: American
- Profession: American Football coach, American football player, Coach, Athlete
Early Life
J.R. Simplot was born in 1909 and raised in Idaho. His early life was defined by hard labor and limited formal education. He famously left school after eighth grade following a disagreement with his father and immediately entered the workforce.
He began working in agriculture, sorting potatoes and raising livestock, saving money until he could eventually buy his own farmland. These early experiences shaped his lifelong understanding of farming, efficiency, and large-scale production.
Building the Potato Empire
Simplot’s first major success came from potatoes. He began buying land, machinery, and agricultural equipment, gradually expanding into large-scale potato production.
One of his early breakthroughs came when he gained control of an electric potato sorting machine, which significantly increased production efficiency. This innovation allowed him to outpace competitors and rapidly scale his operations across Idaho and Oregon.
During World War II, Simplot’s company became a major supplier of dehydrated potatoes and onions to the U.S. military, helping him build the capital needed to expand into fertilizer, cattle feed, mining, and food processing.
His business model was highly efficient and vertically integrated—potato waste became animal feed, fertilizer supported his farms, and agricultural byproducts were reused across operations.
Frozen French Fries
Simplot’s most famous breakthrough came with frozen French fries.
Working with his team, Simplot helped refine a process that made frozen potatoes commercially viable at scale. Although he was initially skeptical, he quickly recognized the opportunity after testing the product.
In the 1960s, Simplot struck a now-legendary deal with Ray Kroc, founder of McDonald’s. He agreed to become one of the chain’s primary suppliers of frozen French fries, building a dedicated production system for the fast-food giant.
That partnership transformed both McDonald’s supply chain and Simplot’s fortune. The company became one of McDonald’s most important suppliers, and Simplot’s wealth grew dramatically as frozen food became a global industry standard.
He became so closely associated with potatoes that he famously drove a car in Boise with the license plate “MR SPUD.”
Micron Technology Investment
In 1980, Simplot made one of the most surprising investments of his career when he backed a small Boise-based startup called Micron Technology.
Although he had no background in semiconductors, Simplot recognized the similarities between agriculture commodities and memory chip manufacturing—both required scale, efficiency, and survival through volatile pricing cycles.
He initially invested $1 million in Micron and later increased his stake as the company struggled in its early years. His philosophy was simple: become the lowest-cost producer of a high-demand product.
Micron went public in 1984 and eventually became one of the world’s leading semiconductor companies. At one point in the 1990s, Simplot reportedly held around 22% of the company, worth nearly $1.8 billion.
Even after reducing his stake, his investment remained one of the most successful crossover bets between traditional agriculture and modern technology.
Business Expansion
Although Simplot stepped down as president of his company in 1973, he remained active in leadership and strategy for decades.
The J.R. Simplot Company expanded globally into food production, fertilizer, mining, and agriculture-related industries. The company became one of the largest privately held agribusiness firms in the world.
Simplot also invested in ski resorts, energy ventures, and other regional businesses, maintaining a reputation as a practical but bold investor.
Personal Life and Death
J.R. Simplot married Ruby Rosevear in 1931, and the couple had four children before later divorcing. He later married Esther Becker in 1972.
Despite his immense wealth, Simplot was known for his down-to-earth lifestyle and frugal habits, often maintaining simple routines despite his billionaire status.
On January 1, 2007, he suffered a fall while attending the Fiesta Bowl, which marked the beginning of his final health decline. He passed away on May 25, 2008, at the age of 99 in Boise, Idaho.
At the time of his death, J.R. Simplot was the richest person in Idaho and one of the oldest billionaires in the United States.
Author: Andrew Walyaula
Andrew Walyaula is a seasoned multimedia journalist. Email: [email protected]
