year rank population 1830 27 8668 1840 22 18213 1850 16 42261 1860 10 81129 1870 11 117714 1880 13 155134 1890 11 255664 1900 8 352387 1910 10 423715 1920 11 506775 1930 13 573076 1940 14 575901 1950 15 580132 1960 20 532759 1970 28 462768 1980 39 357870 1990 50 328123