In-N-Out Burger is an American regional chain of fast food restaurants with locations primarily in California and the Southwest. It was founded in Baldwin Park, California, in 1948 by Harry Snyder and Esther Snyder. The chain is currently headquartered in Irvine, California and has expanded outside Southern California into the rest of California, as well as into Arizona, Nevada, Utah, Texas, Oregon, and Colorado. The current owner is Lynsi Snyder, the Snyders' only grandchild.