Pontiac (/ˈpɒn(t)iæk/ POHNee-ack) is a city in and the county seat of Oakland County in the U.S. state of Michigan. As of the 2020 census…Pontiac (/ˈpɒn(t)iæk/ POHNee-ack) is a city in and the county seat of Oakland County in the U.S. state of Michigan. As of the 2020 census, the city had a total population of 61,606. A part of Metro Detroit, Pontiac is about 20 miles northwest of Detroit.