Brandon Charter Township is a charter township of Oakland County in the U.S. state of Michigan. The population was 15,384 at the 2020 censu…Brandon Charter Township is a charter township of Oakland County in the U.S. state of Michigan. The population was 15,384 at the 2020 census. As a northern suburb of Metro Detroit, Brandon Township is about 30 miles north of the city of Detroit and about 20 miles southeast of Flint. The village of Ortonville is located within the township.