Gogebic County (/ɡoʊˈɡɪ.bɪk/ go-GI-bik) is the westernmost county in the Upper peninsula in the U.S. state of Michigan. As of the 2010 census, the population was 16,427. The county seat is Bessemer.The county was set off and organized in 1887. It had been part of Ontonagon County. The name is said to be derived from the Ojibwe word "bic" which most references interpret as "rock." Alternatively, it is claimed to be derived from Lake Agogebic, later changed to Lake Gogebic.