The Hoyt Sector Model is a generalized model of a city in the 1940’s. It was developed in 1939 by land economist Homer Hoyt. He claimed that a city develops in a series of sectors, not rings, hence disagreeing with the Burgess model of a city. Within each of these sectors, are different activities, which are determined by chance or environmental factors.The Hoyt Sector Model is divided into 5 main categories: the Central Business District, high income residential, middle income residential, low income residential, and transportation and industry. Hoyt believed that cities developed around several important transportation facilities, such as railroads and seaports. As growth of different sectors occur, similar activities remain in these areas and extend outwards.