Chicago Demographics
During its first 100 years, Chicago was one of the fastest-growing cities in the world. When founded in 1833, fewer than 200 people had settled on what was then the American frontier. By the time of its first census, seven years later, the population had reached over 4,000. Within the span of forty years, the city's population grew from slightly under 30,000 in 1850 to over 1 million by 1890. By the close of the 19th century, Chicago was the fifth largest city in the world, and the largest of the cities that did not exist at the dawn of the century. Within sixty years of the Great Chicago Fire of 1871, the population went from about 300,000 to over 3 million, and reached its highest ever-recorded population of 3.6 million for the 1950 census. From the last two decades of the 19th century, Chicago was the destination of waves of immigrants from Ireland, Southern, Central and Eastern Europe, including Italians, Jews, Poles, Bosnians and Czechs. To these ethnic groups, the basis of the city's industrial working class, were added an additional influx of African-Americans from the American South — with Chicago's black population doubling between 1910 and 1920 and doubling again between 1920 and 1930. The great majority of American blacks moving to Chicago in these years were clustered in a so-called "Black Belt" on the city's South Side. By 1930, two-thirds of Chicago's African-American population lived in sections of the city which were 90% black in racial composition. Chicago's South Side emerged as America's second largest urban black concentration, following New York's Harlem.
