HomeCooperatives Agricultural Cooperatives by States Agriculture Co-ops in South Dakota Tags CO CT DE GA IA IL IN KS KY MA MD ME MI MN MO MS NC ND NE NH NJ NY OH PA RI SC SD TN TX VA VT WI WV Tags hide tags Growmark Cooperative Growmark Inc. is an agricultural supply cooperative that provides products, services, and grain marketing in the Midwest and Ontario, Canada. Growmark’s core member cooperatives that use the name FS are located in Illinois, Iowa, and Wisconsin. Aurora Cooperative Aurora Cooperative Elevator Company is an agricultural cooperative company with more than 100 years of experience. Although the majority of the Aurora locations are based in Nebraska, the co-op also serves clients in Texas, Colorado, South Dakota, Kansas, Iowa, and Maryland. Agtegra Cooperative Agtegra Cooperative is a farmer-owned agribusiness committed to providing agronomy, grain, energy, and feed products and services. Agtegra has more than 60 locations and creates jobs for more than 900 employees in eastern North Dakota, and South Dakota.