Kirkland Signature Milk

Kirkland Signature is the private-label brand of Costco Wholesale Corporation. Its milk products are sourced from various regional dairy cooperatives and processors located near Costco warehouse locations to ensure freshness and reduce transportation costs. In the United States, for example, many Kirkland milk products are processed by large dairy companies like Fairlife or regional providers such as Darigold and Dean Foods.

Since its introduction in the early 1990s, the Kirkland Signature brand has served as a hallmark of Costco's retail strategy, offering high-quality products at a lower price point than national brands. While Costco does not own the dairy farms themselves, they maintain strict quality control standards for their suppliers. The brand is managed directly by Costco, which is headquartered in Washington state, ensuring consistency across their global operations.