 One of the earliest censuses, carried out in 1889, counted 157,496 residents.The population reached the 1 million mark in 1934 and as of December 2010 had an estimated population of 2,259,993 with a population density of 6,923 persons per km2.Also as of December 2010 an estimated 1,019,859 households resided there—a significant increase from 153,370 at the end of World War II in 1945.