Highland Park is a city in Wayne County in the U.S. state of Michigan. An enclave of Detroit, Highland Park is located roughly 6 miles north of …Highland Park is a city in Wayne County in the U.S. state of Michigan. An enclave of Detroit, Highland Park is located roughly 6 miles north of Downtown Detroit, and is surrounded by Detroit on most sides. As of the 2020 census, the city had a population of 8,977.