City of Northville 215 W Main St, Northville, MI48167 Northville's city offices are located in a two-story building on Main Street in the historic Downtown area. It is the…More center of Northville. The building houses many departments including the mayor's office, police department, a fire station, the tax assessor's office, the city clerk's office and Northville's Downtown Development Authority, among others. City Council chambers are also located within the building. Visit the city's website for a full list of services and commissions.