The Lodi Grape Festival and National Wine Show Association, Inc. is a non-profit organization established to promote agriculture and agricultural products of San Joaquin County and to offer diverse forms of agriculture education. Under a contractual agreement with San Joaquin County the Association produces the annual Lodi Grape Festival and Harvest Fair, and the Lodi Spring Wine Show. In addition the 20 acre fairgrounds is home to many other events ranging from RV groups to wedding receptions.

The Lodi Grape Festival & Harvest Fair provides an opportunity for many other non-profit groups to raise funds for community and charitable projects. Since 1937, organizations such as Lions Clubs, 4-H Clubs, classrooms, and youth sports raise money by selling products at the Fair or by entering the wide variety of agriculture related competitive exhibits offered each year. Well over $150,000 is raised annually by non-profit groups as a result of the Fair through and more than $30,000 in prize money is paid out by the Lodi Grape Festival each year to individuals and groups for their exhibits.

Established in 1980, the Lodi Spring Wine Show was the first event of its kind providing a venue for local wineries to showcase their product in one location. The Show has evolved over the years and has grown to include more than 45 wineries, food vendors, olive oil companies and commercial vendors.

In 2003 the Association established the Bucks for Books Scholarship Fund providing funds for college textbook expenses to deserving area youth. Since its inception more than 60 scholarships, or $60,000, have been awarded thanks to fundraising efforts and donations.

As part of the fair system of the State of California, overseen by the California Department of Agriculture Department of Fairs and Expositions, the Association receives no tax dollars for support. Revenues generated from activities on the fairgrounds are used to maintain the grounds and service programs during fair time and throughout the year.