About the Food Deserts Locator

In a 2009 report to Congress, Access to Affordable and Nutritious Food: Measuring and Understanding Food Deserts and Their Consequences, ERS outlined a number of ways to measure how many people have limited access to food and how many live in low-income areas with limited access. The report used 1-kilometer (km) square grids as the base geographic unit of analysis, measuring distance from the nearest source of healthy foods. Grids outside of a specified distance from a food source were designated as low access areas (separate markers for low access were used for rural and urban areas). Grids with high concentrations of low-income individuals received particular attention.

via About the Food Deserts Locator.

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