Not only have those who identify on the census as Indian risen from about 200,000 in 1900 to over 2 million by 2010; another 3 million identify as Native and something else. Of this ever-increasing population, in 2010 more than 70 percent lived in urban areas, continuing the trend begun in the years after World War II. Indians are young, too: 32 percent are under age eighteen, compared with 24 percent of the overall population. On reservations, the median age is twenty-six, compared with thirty-seven for the nation at large…Between 1990 and 2000, the income of Americans Indians grew by 33 percent, and the poverty rate dropped by 7 percent. There was no marked difference in income between Indians from casino-rich tribes and those from poorer tribes without casinos. Between 1990 and 1997 the number of Indian-owned businesses grew by 84 percent. And the number of Native kids enrolled in college has doubled in the last thirty years.
That is from David Treuer, The Heartbeat of Wounded Knee: Native America from 1890 to the Present.