Wyoming's Population

2010 563,626

2000 493,782

1990 453,588

1980 469,557

1970 332,416

1960 330,066

1950 290,529

1940 250,742

1930 225,565

1920 194,402

1910 145,965

1900 92,531

1890 62,555

1880 20,789

1870 9,118

Source: U. S. Department of Commerce, Bureau of the Census