It estimated that, as of 1 July 2014, the number of Americans born between 1982 and 2000 stood at 83.1m – more than a quarter of the total population – and 44.2% of these came from a minority race or ethnic group.
The shifts under way were further emphasised in the finding that the under-five age group was now "majority-minority", as 50.2% were part of a minority race or ethnic group.
That same "majority-minority" tag could also be applied to five states: Hawaii (77.0%), the District of Columbia (64.2%), California (61.5%), New Mexico (61.1%) and Texas (56.5%).
Overall the major groups within this classification are growing. The Hispanic population was the largest, totalling 55.4m in July 2014, up 2.1% on a year earlier.
The African-American population was 45.7m, a 1.3% increase, and Asian-Americans numbered 20.3m, a 3.2% increase.
The numbers of the smaller groups have also swelled: the American Indian and Alaska Native population was up 1.4% to 6.5m while that of Native Hawaiians and Other Pacific Islanders rose 2.3% to 1.5m.
The slowest-growing group was the nation's non-Hispanic, white population which edged up 0.5% to 197.9m.
Unsurprisingly, the least diverse age group is the oldest. There are now some 46.2m over-65s – a group that also includes the oldest four years of the Baby Boomer generation – of whom only 21.7% are from a minority.
The oldest states were Florida and Maine, the youngest Alaska and Utah. And in contrast to most states, five experienced a decline in median age between 1 July 2013 and 1 July 2014: North Dakota, Hawaii, Montana, Wyoming and Iowa.
Data sourced from PR Newswire; additional content by Warc staff