Southfield is a city in Oakland County in the U.S. state of Michigan. As of the 2010 census, the city had a population of 71,739.As a northern suburb of Detroit, Southfield shares part of its southern border with Detroit. The city was originally part of Southfield Township before incorporating in 1958. The autonomous city of Lathrup Village is an enclave within Southfield. The city is home to the Southfield Town Center complex, which includes five interconnected office buildings. The tallest of these, 3000 Town Center, is 402 feet (122.5 m) tall; it is the state's second-tallest building outside Detroit (after the River House Condominiums in Grand Rapids) and the state's 16th-tallest building overall.