Several notable colleges are located in the metropolitan suburbs. The population is highly urbanized, with 82.3% of the population residing in cities and suburbs. The Metrorail network consists of 96 stations throughout the suburbs and outskirts of Cape Town. Interstate 285 is the beltway which encircles the city and its immediate eastern suburbs. All were supercenters located in suburbs of Mexico City. The Entoto Mountains start among the northern suburbs. There are a number of suburbs and surrounding villages. They live in the eastern suburbs of Sydney. Metro network covers Helwan and other suburbs. Most of these suburbs measure less than in area. Cordero grew up in the northern suburbs of Detroit. Chemical plants are concentrated in the far eastern suburbs. Romney also did well in the northern Columbus suburbs. They lived in one of the poorest suburbs of Tbilisi. The district serves most of the northwestern suburbs of Pittsburgh.