Population Data Series
2015 Population Estimates

The U.S. Census Bureau estimates that the nation’s population increased from 318.9 million (July 2014) to 321.4 million (July 2015) — adding 2.5 million new residents. On average, the U.S. population has increased about 0.8 percent per year since 2010.

North Dakota had the fastest rate of growth at 2.3 percent. Rounding out the list of most rapidly growing states are Colorado (1.89 percent), District of Columbia (1.88), Nevada (1.85 percent), Florida (1.84 percent), and Texas (1.82 percent). Population totals decreased in seven states by less than one percent: West Virginia (-0.25 percent), Illinois (-0.17 percent), Vermont (-0.12 percent), Connecticut (-0.11 percent), Maine (-0.07 percent), Mississippi (-0.04 percent) and New Mexico (-0.02 percent).

TOP 25 MOST POPULOUS STATES
2014 - 2015 Mid-Year Population Estimates
State Population Rank Population July 2015 Population July 2014 Absolute Change Percent Change Census 2010 Population Percent Change 2010 - 2015
California 1 39,144,818 38,792,291 352,527 0.9% 37,253,956 5.1%
Texas 2 27,469,114 26,979,078 490,036 1.8% 25,145,561 9.2%
Florida 3 20,271,272 19,905,569 365,703 1.8% 18,801,310 7.8%
New York 4 19,795,791 19,748,858 46,933 0.2% 19,378,102 2.2%
Illinois 5 12,859,995 12,882,189 -22,194 -0.2% 12,830,632 0.2%
Pennsylvania 6 12,802,503 12,793,767 8,736 0.1% 12,702,379 0.8%
Ohio 7 11,613,423 11,596,998 16,425 0.1% 11,536,504 0.7%
Georgia 8 10,214,860 10,097,132 117,728 1.2% 9,687,653 5.4%
North Carolina 9 10,042,802 9,940,387 102,415 1.0% 9,535,483 5.3%
Michigan 10 9,922,576 9,916,306 6,270 0.1% 9,883,640 0.4%
New Jersey 11 8,958,013 8,938,844 19,169 0.2% 8,791,894 1.9%
Virginia 12 8,382,993 8,328,098 54,895 0.7% 8,001,024 4.8%
Washington 13 7,170,351 7,063,166 107,185 1.5% 6,724,540 6.6%
Arizona 14 6,828,065 6,728,783 99,282 1.5% 6,392,017 6.8%
Massachusetts 15 6,794,422 6,755,124 39,298 0.6% 6,547,629 3.8%
Indiana 16 6,619,680 6,597,880 21,800 0.3% 6,483,802 2.1%
Tennessee 17 6,600,299 6,547,779 52,520 0.8% 6,346,105 4.0%
Missouri 18 6,083,672 6,063,827 19,845 0.3% 5,988,927 1.6%
Maryland 19 6,006,401 5,975,346 31,055 0.5% 5,773,552 4.0%
Wisconsin 20 5,771,337 5,759,432 11,905 0.2% 5,686,986 1.5%
Minnesota 21 5,489,594 5,457,125 32,469 0.6% 5,303,925 3.5%
Colorado 22 5,456,574 5,355,588 100,986 1.9% 5,029,196 8.5%
South Carolina 23 4,896,146 4,829,160 66,986 1.4% 4,625,364 5.9%
Alabama 24 4,858,979 4,846,411 12,568 0.3% 4,779,736 1.7%
Louisiana 25 4,670,724 4,648,990 21,734 0.5% 4,533,372 3.0%
Source: American Community Survey, Annual Population Estimates, Table PEPANNRES

As shown in the table above, the most populous states in the nation are California (39.1 million), Texas (27.5), Florida (20.3), New York (19.8), Illinois (12.9) and Pennsylvania (12.8). In 2010, the last decennial census year, New York was the third most populous state; at mid-decade, Florida ranks third. Between 2010 and 2015, Florida added 1.5 million residents while New York added 417,700.

States with the largest one-year, July to July, population gains were Georgia (+117,730), Washington (+107,190), North Carolina (+102,420), and Colorado (+100,990).

Missouri— ranked 18th by population size— had 6,083,672 residents. The state gained 19,800 new residents between July 2014 and July 2015. Neighboring Kansas added 9,000 residents; neighboring Illinois lost about 22,200 residents.

Oklahoma and Tennessee had the largest one year percentage increases among those states that surround Missouri: 0.80 and 0.82 percent, respectively. Kentucky had the smallest increase at 0.28 percent.

MISSOURI and SURROUNDING STATES
2014 - 2015 Mid-Year Population Estimates
 
State Population Rank Population July 2015 Population July 2014 Absolute Change Percent Change Census 2010 Population Percent Change 2010 - 2015
Illinois 5 12,859,995 12,882,189 -22,194 -0.17% 12,830,632 0.2%
Tennessee 17 6,600,299 6,547,779 52,520 0.80% 6,346,105 4.0%
Missouri 18 6,083,672 6,063,827 19,845 0.33% 5,988,927 1.6%
Kentucky 26 4,425,092 4,412,617 12,475 0.28% 4,339,367 2.0%
Oklahoma 28 3,911,338 3,879,610 31,728 0.82% 3,751,351 4.3%
Iowa 31 3,123,899 3,109,481 14,418 0.46% 3,046,355 2.5%
Arkansas 34 2,978,204 2,966,835 11,369 0.38% 2,915,918 2.1%
Kansas 35 2,911,641 2,902,507 9,134 0.31% 2,853,118 2.1%
Nebraska 38 1,896,190 1,882,980 13,210 0.70% 1,826,341 3.8%
Source: American Community Survey, Annual Population Estimates, Table PEPANNRES

2015 Population Change Estimates Map of US

 

 

 

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