Grocery Gap Atlas

Description:	The Grocery Gap Atlas produces food access and market concentration estimates for grocery stores.
Time Frame:	Year; 2023
Spatial Scale:	Tract
Format:	CSV and XLXS
Source:	Rural Advancement Foundation International-USA (RAFI-USA) and the Open Spatial Lab at the Data Science Institute at the University of Chicago
Original Repository:	2023
Living Atlas:	N/A

This dataset offers tract level estimates of food access and market concentration. Food access is using a gravity model with a floating catchment area (FCA) and market concentration is calculated using the Herfindahl-Hirschman Index (HHI).

NOTE: Food access is calculated using euclidian distance. Service areas for grocery stores are calculated using “distance ranges of 5 to 20 minutes driving time with average area traffic, based on reported ranges of how far people are willing to travel in the USDA FoodAPS survey”.