Discount grocer Aldi Inc. plans a May 19 opening for its first San Diego County store, at 1750 University Ave. in Vista.

A company statement said the Vista store is among seven opening statewide on the same day, bringing the grocer’s total to 25 California openings within a period of less than three months.

By the end of 2016, Aldi will have 45 stores open in California’s eight southernmost counties. After operating for several years in the Eastern U.S., the fast-growing retailer has been expanding its Western presence over the past two years and now operates more than 1,500 stores in 33 states.

The stores have a format smaller than those of traditional supermarkets, and 90 percent of items are sold under Aldi’s own brands. The stores have departments selling items including fresh meat, bread, dairy, produce and household items.

Illinois-based Aldi Inc. has not formally announced other locations planned for San Diego County. The grocer has established distribution operations in Moreno Valley in Riverside County, and is known to have submitted paperwork to the city of Escondido related to a potential store in that city.