Capital: Washington, District of Columbia

National Motto: In God We Trust

National Bird: American Bald Eagle

National Flower: Rose

National Anthem: The Star-Spangled Banner

1790: 3,893,374

1800: 5,236,631

1810: 7,036,509

1820: 10,037,323

1830: 12,785,928

1840: 16,987,946

1850: 23,054,460

1860: 31,183,582

1870: 38,155,505

1880: 49,371,340

1890: 62,168,811

1900: 74,607,225

1910: 91,641,195

1920: 105,273,049

1930: 122,288,177

1940: 130,962,661

1950: 149,895,183

1960: 178,554,916

1970: 203,302,031

1980: 226,545,805

1990: 248,709,873

2000: 281,423,231