About

Irish immigrant W.T. McClelland and his wife Winifred founded Shamrock Dairy in 1922 in Tucson, Arizona with only a few cows, a truck, and a dream. The couple did all the milking, bottling and deliveries themselves, instilling their family values into the company and maintaining a close-knit culture as it grew.

100 years later, the McClelland family’s hard work and perseverance, combined with the dedication of countless Shamrock associates, has transformed the still family-owned company into what it is today – a nationally ranked, privately-held Forbes 500 Company with over 5,000 associates across the U.S.