What is the term for a community in which the residents have little or no access to fresh, affordable, healthy foods, usually located in densely populated, urban areas?

The answer is food desert.

Explanation:

The term refers to an area with a limited access to food or food services, such as supermarkets or grocery stores. In contrast, an area that provides these benefits is called a food oasis.

The population of food deserts usually has a low income, thus the area is not seen as appropriate for food companies to set up their businesses.