America is getting older and more racially diverse as white baby boomers give way to booming numbers of Hispanics and Asians.

Every racial group grew between 2015 and 2016, but the number of whites increased at the slowest rate - less than one hundredth of 1 percent or 5,000 people.

That is a fraction of the rates of growth for Hispanics, Asians and people who said they are multi-racial, according to estimates from the Census Bureau.

Every racial group grew between 2015 and 2016, but the number of whites increased slowest - less than one hundredth of 1 percent or 5,000 people. A scene from Vista, California

The Asian population and those who identified as being of two or more races grew by 3 percent each, to 21 million and 8.5 million, respectively.

Hispanics grew by 2 percent to 57.5 million. The black population grew by 1.2 percent to nearly 47 million.

The number of non-Hispanic whites grew by only 5,000, leaving that population relatively steady at 198 million of the nation's 325 million people.

Despite the rapid growth in the population of other racial groups, whites will remain in the majority in the U.S. until after 2040.

American taxpayers also face a double-whammy of extra costs as an increasing population of elderly people is matched by a boom in the number of youngsters.

The proportion of the population aged over 65 jumped from 12 to 15 percent from 2001 to 2016, driven by the ageing of the baby boomer generation.

President Donald Trump's core support in the 2016 election came from white voters, whose turnout increased

This represents an increase from 35 million to 49.2 million in those 16 years.

That is a costly leap for taxpayers as those residents move to Medicare, government health care for seniors and youngsters with disabilities.

This accounted for $1 out of every $7 in federal spending last year, set to grow to $1 out of every $6 spent by 2027.

Net Medicare spending is expected to nearly double over the next decade, from $592 billion to $1.2 trillion.

At the same time, children born from 2001 through 2016 were the nation's fastest-growing age group, with a 6.8 percent jump in the year beginning July 1, 2015.

That means more demand on taxpayers for schools and bilingual education.

President Donald Trump's core support in the 2016 election came from white voters, whose turnout increased compared to previous polls.

Meanwhile, black turnout dropped and the non-white share of the U.S. electorate remained flat compared with the 2012 election.

California had both the largest number of whites and non-white Hispanics in 2016, 30 million and 15.3 million, respectively.

Texas had the largest numeric increase in both the white and non-white Hispanic populations. Pictured: Texas A&M University campus

Texas had the largest numeric increase in both the white and non-white Hispanic populations.

As for the share of a state's overall population, New Mexico had the highest percentage of non-white Hispanics at 48.5 percent.

Maine had the largest percentage of whites, nearly 97 percent.

Experts say the full impact of racial changes on voting patterns will only become clear in the decades to come.