year rank population 1790 3 18320 1800 4 24937 1810 4 33787 1820 4 43298 1830 4 61392 1840 5 93383 1850 3 136881 1860 5 177840 1870 7 250526 1880 5 362839 1890 6 448477 1900 5 560892 1910 5 670585 1920 7 748060 1930 9 781188 1940 9 770816 1950 10 801444 1960 13 697197 1970 16 641071 1980 20 562994 1990 20 574283