Lake Angelus is a city in Oakland County in the U.S. state of Michigan. An affluent northern suburb of Detroit, Lake Angelus is located about 35 …Lake Angelus is a city in Oakland County in the U.S. state of Michigan. An affluent northern suburb of Detroit, Lake Angelus is located about 35 miles north of downtown Detroit. With a population of 287 as of the 2020 census, Lake Angelus is the second-smallest city in Michigan, behind Omer; it also has one of the highest per capita incomes of any community in the state.