Associated Milk Producers Inc. (AMPI) is a dairy marketing cooperative owned by 2,000 farm families and operated by its 1,200 employees. Dairy farm owners produce high-quality milk on family farms across Wisconsin, Minnesota, Iowa, Nebraska, South Dakota and North Dakota. AMPI's own packaging and processing plant is proudly located in Portage, Wisconsin, and their diversity in production is an asset to many customers here in Wisconsin and beyond. (They also have plants in Blair and Jim Falls, Wisconsin. This makes it sound like they only have one plant in Portage.)