Shamrock Farms is celebrating 100 years of statehood and its own 90 years of serving farm-fresh dairy products to Arizona families.
As an official sponsor of Arizona’s Centennial, Shamrock Farms is celebrating with a giveaway of 100 daily prizes and hosting a special edition Centennial farm tour.

Meal time for the cows at Shamrock Farms in Stanfield, south of Phoenix.
“We’re proud to be a part of the state’s history,” says Sandy Kelly, director of marketing for Shamrock Farms. “We are joining the celebration of Arizona’s centennial to pay tribute to this great state and thank the families who have supported Shamrock all these years.”
The dairy started in 1922 in Tucson with only 20 Guernsey cows, one model truck and a dream. Today, Shamrock is comprised of Shamrock Farms, one of the largest family-owned and –operated dairies nationwide and Shamrock Foods, one of the top 10 largest foodservice distribution companies in the United States.
The “100 Celebrating 100” giveaway includes 100 daily prizes and one grand prize of a Roxie-supply of dairy and a family fun pack to Arizona attractions. Everyone who enters instantly wins a free child pass to Shamrock Farms Farm Tour during Arizona’s Centennial year. Online entry and official rules are available at shamrockfarms.net.
Special Centennial tours now through May 2012 will educate guests about how the “cattle” of Arizona’s 5 C economy have thrived. All guests receive a limited-edition Centennial keepsake wristband.
Then & Now: Shamrock Farms Celebrates 90 Years
THEN: In 1922, Shamrock began with 20 Geurnsey milking cows. The herd was hand milked until 1933, when milking machines were used for the first time.
NOW: Shamrock Farms has a herd of more than 10,000 cows, including 700 specially raised organic cows. Some of the cows in Shamrock Farms herd are the Guernsey breed and thus, descendants of the first herd in 1922.
THEN: Shamrock Farms began by selling rich raw milk, delivered in traditional pint and quart glass bottles. The pasteurization process was introduced in 1926, and Shamrock Farms was one of the first to meet the requirements.
NOW: Shamrock Farms offers more than 200 dairy products, including 60 milk products alone. Shamrock Farms Extended Shelf Life (ESL) capabilities introduced in 2001 make it possible for its farm-fresh milk to be enjoyed across the country and created a national following.
THEN: Everything began in Tucson in 1922 and moved to Phoenix in 1956, when Shamrock Farms built a new plant including a state-of-the-art quality control lab and culture room for making sour cream, cottage cheese and buttermilk.
NOW: Shamrock Farms still operates from its 1956 location along I-17 and Thomas Road, best known for its iconic time and temperature sign. Much has changed since 1956, however, including the time and temperature sign, which was converted to an energy-efficient LED sign in 2009.
THEN: Shamrock Farms business began with 40 to 50 customers, with the majority of its customers being home delivery.
NOW: Today, Shamrock Farms and its sister company Shamrock Foods boast nearly 20,000 customers nationwide.
THEN: Shamrock was very proud of its one Model T delivery truck in 1922, and expanded to have 55 refrigerated delivery trucks by 1955.
NOW: Shamrock operates a fleet of more than 1,000 vehicles to service their customers.
Visit shamrockfarms.net to sign up for the giveaway and learn more about farm tours.