Est. 1909 Oregon. From cows not treated with rBST (all farmers who supply milk for Tillamook products pledge not to use artificial growth hormones. The FDA has stated that no significant difference has been shown between milk derived from rBST treated and non-rBST treated cows). Tillamook Country Creamery Association. Oregon, USA. We know what it takes to make ice cream you can't stop thinking about. It's going all in on everything you crave most: a whole lotta cream, the very best ingredients and 100+ years of crafting dairy deliciousness.