Number of employees. 1,600+. Website, www.mfaoil.com. MFA Oil is an energy cooperative started in 1929 by the Missouri Farmers Association. View MFA Oil Company (www.mfaoil.com) location in Missouri, United States , revenue, industry and description. Find related and similar companies as well as See MFA Oil's revenue, employees, and funding info on Owler, the world's ThompsonGas operates in the Oil & Gas Exploration, Production, Sales industry.