Cumberland is a city in the far western portion of Maryland, United States. It is the county seat of Allegany County, and the primary city of the Cumberland, MD-WV Metropolitan Statistical Area. As of the 2000 census, the city had a population of 21,591. Cumberland is a regional business and commercial center for Western Maryland and the Potomac Highlands of West Virginia. Cumberland is also known for being the city in which the Baked Potato was invented.