The settlement was formally incorporated as the Village of Warren from Warren Township on April 28, 1893 out of one square mile bound by 14 Mile Road and 13 Mile Road to the north and south, and in half-a-mile east and west of Mound Road. The small village grew slowly, and had a population of 582 in 1940 and 727 in 1950, while the larger surrounding township grew at a much quicker pace. Much of this growth was due to the construction of the Chrysler's Truck Assembl plant in 1938, the Detroit Arsenal Tank Plant in 1940 to support the WW II effort, and the General Motors Technical Center between 1949 and 1956.