Morenci is a city in Lenawee County in the U.S. state of Michigan. Sharing a southern boundary with the state of Ohio, it is the southernmost city in the state of Michigan. The population was 2,270 at the 2020 census.

Lenawee County is a county located in the U.S. state of Michigan. As of the 2020 United States Census, the population was 99,423. The county seat is Adrian. The county was created in 1822, from territory partitioned from Monroe County. Its governing structure was organized in 1826.