Copper Harbor is an unincorporated community and census-designated place (CDP) located in Keweenaw County in the U.S. state of Michigan. It is located within Grant Township. The population of the CDP was 136 as of the 2020 census. The community is located at the northern tip of the Keweenaw Peninsula. Copper Harbor is also the northernmost permanently populated community and northernmost point of mainland in the state of Michigan. Due to its natural environment and surroundings, Copper Harbor is marketed as an all-season tourist destination and also contains Fort Wilkins Historic State Park.