Dollar General is the largest retailer in the US by number of locations, with over 20,000 stores across 48 states. Family Dollar operates over 8,200 stores. Walmart's U.S. store count is significantly smaller (around 4,700 U.S. Walmart stores and 600 Sam's Clubs as of 2024).
Dollar stores are frequently found at the heart of "food deserts," which are often rural communities located more than 10 miles from a grocery store selling fresh produce—a gap often created when a community is too small to maintain a supermarket or attract a retailer like Walmart.