In 1854, several farmers from the county built a schooner named the Morning Star to transport butter to Portland, Oregon; the schooner is now featured as part of the co-op's logo, and a replica (constructed in 1992 by master shipwright Richard Miles of Aberdeen, WA) is on display at The Tillamook Cheese Factory.

TCCA hired an ad agency and began campaigning in 1917 in Los Angeles, San Francisco, and Portland.

[4] Under secretary-manager George R. Lawson (CEO- 1944-1950), the cooperative began producing rindless cheese in 1946 and bottled milk the following year.

[6] Tours inside the actual cheese processing area of the plant were discontinued in 1967 due to health and safety regulations.

[7] A new visitors center was opened in June 2018 with 38,500 square feet (3,580 m2) of exhibit and viewing space.

[1] This controversy made international news, particularly in 400-year-old Bandon, Ireland, where residents have milked cows for generations.

[1] However, the move that garnered Tillamook the most nationwide attention came in 2005 after a slew of consumer inquiries about dairies' use of a genetically engineered bovine growth hormone designed to boost milk production.

[1] The U.S. Food and Drug Administration had said milk products derived from cows injected with the hormone were safe, but consumer worries about potential cancer risks persisted.

[1] Over objections from some member farmers and biotechnology giant Monsanto, which manufactured the hormone, Tillamook County Creamery Association voted to require all of its dairy suppliers to phase out its use.

The mega-dairy, Oregon's second-largest, was approved by state regulators for 30,000 cows in early 2017 despite opposition from local and national environmental and animal welfare groups and small-farm advocates.