Data: 2010 U.S. Census data

Data provided by U.S. Census Bureau
msnbc.com staff and news service reports
updated 12/21/2010 11:49:16 AM ET 2010-12-21T16:49:16

After knocking on 50 million doors and handling tens of millions of surveys, the Census Bureau on Tuesday announced that the official population of the United States is now 308,745,538.

The 2010 census also shows America's once-torrid population growth dropping to its lowest level in seven decades.

The new number, based on the surveys taken on April 1, 2010, is a 9.7 percent increase over the last census, 281.4 million residents in 2000.

But that's slower than the 13.2 percent increase from 1990 to 2000. And it's the slowest rate of increase since the 1940 census. That is the decade in which the Great Depression slashed the population growth rate by more than half, to 7.3 percent.

The Census figures will be used to reapportion the 435 House seats among the 50 states. The numbers trigger a high-stakes process wherein the dominant party in each state redraws the election map, shaping the political landscape for the next 10 years.

In Congress, the steady migration to the South and West should be a boon for Republicans, with GOP-leaning states led by Texas picking up House seats.

The U.S. is still growing quickly relative to other developed nations. The population in France and England each increased roughly 5 percent over the past decade, while in Japan the number is largely unchanged and in Germany the population is declining. China grew at about 6 percent; Canada's growth rate is roughly 10 percent.

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"We have a youthful population that will create population momentum through a large number of births, relative to deaths, for years to come," said Mark Mather, an associate vice president at the Population Reference Bureau, a private firm in Washington that analyzes census data. "But demographers generally expect slower growth in the first decade of the 21st century."

The declining growth rate since 2000 is due partly to the economic meltdown in 2008, which brought U.S. births and illegal immigration to a near standstill compared with previous years. The 2010 count represents the number of people — citizens as well as legal and illegal immigrants — who called the U.S. their home on April 1 this year.

The most populous state was California (37,253,956); the least populous, Wyoming (563,626).

The state that gained the most numerically since 2010 was Texas (up 4,293,741 to 25,145,561); the state that gained the most as a percentage was Nevada (up 35 percent to 2,700,551).

Politically, Texas will gain four House seats due to a burgeoning Hispanic population and a diversified economy that held up relatively well during the recession. Other winners are GOP-leaning Arizona (1) and Florida (2).

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Other states with increases are: Georgia (1), South Carolina (1), Utah (1) and Washington (1).

States that lose seats are: Illinois (1), Iowa (1), Louisiana (1), Massachusetts (1), Michigan (1), Missouri (1), New Jersey (1), New York (2), Ohio (2), Pennsylvania (1).

The Ohio and New York losses typify many of the Democratic strongholds carried by Barack Obama in 2008 that saw declines in political influence.

And, for the first time in its history, Democratic-leaning California did not gain a House seat after a census after losing many of its residents in the last decade to neighboring states.

On Monday, White House press secretary Robert Gibbs sought to downplay the possibility that 2010 census results would be a boon for Republicans. "I don't think shifting some seats from one area of the country to another necessarily marks a concern that you can't make a politically potent argument in those new places."

Story: South gains electoral clout in Census tally

The projections do not account for overseas U.S. military personnel and their families, who are typically counted at military bases in the U.S. The Census Bureau obtains Pentagon records on overseas military and adds them to the resident count before allocating the House seats. In 2000, North Carolina beat out Utah for the last House seat because of its strong Army presence.

The stakes are high. States on the losing end Tuesday may have little recourse to challenge the numbers. Still, census officials were bracing for the possibility of lawsuits seeking to reverse the 2010 findings, according to internal documents.

The release of state apportionment numbers is the first set of numbers from the 2010 census. Beginning in February, the Census Bureau will release population and race breakdowns down to the neighborhood level for states to redraw congressional boundaries.

Louisiana, Virginia, New Jersey and Mississippi will be among the first states to receive their redistricting data next February.

The 2010 census results also are used to distribute more than $400 billion in annual federal aid and will change each state's Electoral College votes beginning in the 2012 presidential election.

The Associated Press contributed to this report.

Video: Census data shows southward migration

  1. Closed captioning of: Census data shows southward migration

    >>> now.

    >>> good evening. we now know there are 308 million of us in america. give or take, of course, the new census just out today is the closest the government can get knowing the exact number of us on any given day. in a very short time, going back to our humble beings we have become a big country and we know a lot more about ourselves. the numbers tell us we're on the move leaving old, familiar places going mostly to the south and west. today's new numbers will affect our politics in a big way and with all of it tonight we begin with tom costello in washington .

    >> reporter: from the nation's back roads to its conguested highways from the sidewalks to its packed diners, every day seems to bring a little less elbow room. now the numbers tell the story. as of april 1st , 2010 , there were 308.7 million people living in the u.s. while that's an increase of 9.7% since 2000 , it's the slowest growth rate since tend of the great depression. meanwhile, as it has for 100 years the population continues to move out of the northeast and midwest with the west and south each growing by about 14%. nevada's population surged by 35%. texas , by 20%.

    >> we have consistently seen the midwest and northeast declining in relative size and the south and the west increasing.

    >> reporter: here's where the population shift will really matter. while the senate composition won't change at all on the house side, 435 seats will change. ten states are about to lose one or more representatives, eight state also gain representation. illinois, iowa, louisiana, massachusetts, michigan, missouri, new jersey, new york, ohio and pennsylvania all lose seats. while arizona, florida, georgia, nevada, south carolina , utah, washington and texas win. texas , alone, picks up four seats. the population growth in the south and west traditionally republic strongholds could be a win for republicans.

    >> if this count were applied to the 2008 presidential race, president obama would have won with six fewer electoral college votes so he has a higher hurdle to clear in 2012 .

    >> reporter: now states will redraw congressional districts and republicans appear to have an advantage. the country has been counting the population since 1790 when george washington was president and 3.9 million people lived in the 13 original colonies . in 1940 , fdr was president with 132 million people living in 48 states . by 1960 , with eisenhower in the white house , baby-boomers had surged the population to 179 million. when reagan was elected in 1980 , there were 226 million of us. 281 million by 2000 . and 308 million today, bigger than ever but the slowest growth rate in 60 years. tom costello, nbc news, washington .

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