Meijer is a "hypermarket" regional chain headquartered in Walker, Michigan. It began as a supermarket chain in 1934 in Greenville, Michigan. The company is credited with developing the "supercenter" concept in the early 1960s. 200 Meijer stores exist, and nearly half of them are found in Michigan. Meijer also operates 177 gas stations, 2 car washes, 2 manufacturing facilities, 4 distribution facility complexes and 6 C-Stops at its stores. Its main outlets are labeled as hypermarkets because they combine grocery store offerings along with department store items. Each location is open 24 hours a day, every day of the year but Christmas day and Christmas Eve. The typical Meijer store design stations the supermarket inventory on one side and general merchandise on the opposing side.