Market Sizing: Grocery Store Count Needed to Serve a Large Metro Area

Estimate how many grocery stores a large metropolitan city needs to serve its residents. ```hint Start from shoppers Work from how often residents shop for groceries in person and how many shoppers a store of each type can handle, rather than recalling a store count. ``` ### Clarifying Questions - Which city should I size, or may I choose one? A dense city of small neighborhood shops gives a very different answer from a car-dependent city of large supermarkets. - What counts as a grocery store: supermarkets and hypermarkets, small neighborhood grocers, convenience stores, delivery-only dark stores? - Does "required" mean the minimum number needed to meet demand, or how many stores exist today? - Should grocery delivery reduce the number of physical stores the city needs? ### What a Strong Answer Covers - A clear scope: the city, the store definition, and whether the estimate measures need or current supply - An equation linking residents' in-store grocery trips to the throughput of each store format - Labeled, round-number assumptions with correct arithmetic - A sanity check from an independent angle, such as distance to the nearest store or revenue per store - Which assumptions move the answer most ### Follow-up Questions - How would your estimate change if a large share of grocery shopping moved to quick-delivery apps served from dark stores? - Which assumption would you verify first with real data, and where would you find it? - How would the answer differ between a dense city where people walk to small shops and a sprawling one where people drive to supermarkets?