In the US of 4345 Stores, 27 companies. The biggest: Safeway (744 stores), Sams Club (643 stores), Costco (482 stores), Trader Joe's (451 stores) and Albertsons (375 stores).
Albertsons 375 storesALDI 1 storesBravo Supermarket 91 storesCostco 482 storesDonelans 5 storesFarm Fresh 39 storesHannaford 85 storesHarveys Supermarket 58 storesHohugos 10 storesH‑E‑B 292 storesLittman Jewelers 10 storesLucky 62 storesmarsh 73 storesMeijer 219 storesMenards 286 storesPIONEER supermarkets 28 storesPresidente Supermarket 26 storesRosauers Supermarkets 19 storesSafeway 744 storesSams Club 643 storesSave Mart 98 storesSedanos 33 storesTarget 31 storesTrader Joe's 451 storesUnited Supermarkets 39 storesVallarta Supermarket 45 storesWinCo Foods 100 stores