Lodi, city, San Joaquin County, central California, on the Mokelumne River, in a productive farm area; founded 1869 as a railroad station, incorporated as a city 1906. Major manufactures include wine, brandy, processed food, rubber products, and clothing. A grape festival and a national wine show are held here annually. Lodi has a symphony orchestra, a theater group, and an art center. In 1874, the city was named Lodi, probably for a famous racehorse of the time. Population 35,221 (1980); 51,874 (1990); 56,999 (2000).