The Southland-based Trader Joe's plans to open two stores in Paso Robles and Anaheim Hills as part of a larger expansion into the company's nationwide stores. The company plans to unveil at least 20 locations this year, with two of these stores already opened. Marketing executives explained the process of opening new stores based on population density, draw, site access, traffic patterns, and parking considerations. The new locations will include stores in Texas, Kansas, Washington, Arizona, Florida, Georgia, and Louisiana.