Founded in 1894, it is the oldest farmer-owned cooperative in the state of Wisconsin and boasts the nation's largest cheese producing plant east of the Mississippi River.

[2] As of 2007, ADC had two cheese plants, one in Black Creek and one in Waupun, as well as 467 employees.

[2] In 2008, Alto Dairy Cooperative was sold to Saputo Inc., a Canadian cheese company.

[3] In 2007, ADC appeared on the History channel series Modern Marvels.

The show interviewed employees and filmed the production process at the Black Creek cheese plant, chosen for its diverse cheese-making abilities.