year rank population 1850 87 8091 1860 48 18611 1870 27 48244 1880 24 75056 1890 27 105436 1900 21 169164 1910 22 233650 1920 21 314194 1930 21 364161 1940 20 386972 1950 23 427173 1960 26 476258 1970 11 744624 1980 12 700807 1990 13 731327