As food retailers open, close, and change ownership, the resulting instability in local food environments can affect food access and health. Gentrification, and its associated socioeconomic changes, can be a factor in destabilizing food environments. This study examined food retail in lower income, gentrifying, and higher income census tracts in the Bronx, New York, in 2008 and 2017 to analyze the level of instability of retailers over this period.