Food insecurity is a pervasive problem in the United States and it is particularly acute in high cost areas. This study focuses on the diets and food expenditures of food bank clients in two Northern California counties located in what is commonly known as Silicon Valley. The results indicate that the study group spent 27% more than the federal government’s Thrifty Food Plan, but consumed a lower amount of fruits, vegetables, protein, and dairy than what is needed for a healthy diet. Policies that encourage better nutrition and more balanced diets at affordable prices and which take into account the living and transportation situations of food insecure populations are needed to address these issues.