Yale is a city in St. Clair County in the U.S. state of Michigan. The population was 1,955 at the 2010 census. Yale is considered unofficially as the Bologna Capital of the world, in part due to its Yale Bologna Festival, which began in 1989. Yale bologna is sold in grocery stores throughout the area. Yale is also home to the Yale Airport which is just south of town on Brockway Rd.

St. Clair County is a county located in the U.S. state of Michigan and bordering the west bank of the St. Clair River. As of the 2020 census, the population was 160,383. It is the 13th-most populous county in the state. The county seat is Port Huron, located at the north end of the St. Clair River at Lake Huron. The county was created September 10, 1820, and its government was organized in 1821. It is located northeast of Detroit. It is considered by the State of Michigan to be a part of The Thumb, a peninsula that is surrounded by Lake Huron in the east-central area of the state. This area is sometimes dubbed the Blue Water Area.