South Mumbai, colloquially SoBo from South Bombay in Indian English, administratively the Mumbai City District, is the city centre and the southernmost precinct of Greater Bombay. It extends from Colaba to Mahalaxmi, Byculla and Mazgaon neighbourhoods, and comprises the city's old and formerly main business localities, making it the wealthiest urban precinct in India. Property prices in South Mumbai are by far the highest in India and among the highest in the world. In terms of Maharashtra Legislative Assembly, the precinct consists of the constituencies of Colaba, Mumbadevi, Malabar Hill and Byculla.