Population Figures
The following are the population figures for Chicago between 1830 and 1990.
The 1830 figure is approximated.
The other figures are based on the U.S. census taken every 10 years.

1830	100
1840	4,470
1850	29,963
1860	112,172
1870	298,977
1880	503,185
1890	1,099,850
1900	1,698,575
1910	2,185,283
1920	2,701,705
1930	3,376,438
1940	3,396,808
1950	3,620,962
1960	3,550,404
1970	3,369,357
1980	3,005,072
1990	2,783,726