The Foster Farms Dairy was founded in 1941 by Max and Verda Foster in Modesto, California, a venture following the 1939 opening of Foster Farms. The company claims to be "the largest privately owned dairy in California." [1]
In 2007, Foster Farms acquired Crystal Cream and Butter Company from HP Hood. In 2009, Foster Farms Dairy acquired Humboldt Creamery.