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Colorado is a state encompassing most of the Southern Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. Colorado is part of the Western United States, the Southwestern United States, and the Mountain States. Colorado is the 8th most extensive and the 22nd most populous of the 50 United States. The United States Census Bureau estimates that the population of Colorado was 5,355,866 on July 1, 2014, an increase of 6.50% since the 2010 United States Census.

The state was named for the Colorado River, which Spanish travelers named the Río Colorado for the ruddy (Spanishcolorado) silt the river carried from the mountains. The Territory of Colorado was organized on February 28, 1861, and on August 1, 1876, U.S. President Ulysses S. Grant signed a proclamation admitting Colorado to the Union as the 38th state. Colorado is nicknamed the "Centennial State" because it became a state 28 days after the centennial of the United States Declaration of Independence.

Colorado is bordered by Wyoming to the north, Nebraska to the northeast, Kansas to the east, Oklahoma to the southeast, New Mexico to the south, Utah to the west, and Arizona to the southwest, at the Four Corners. Colorado is noted for its vivid landscape of mountains, forests, high plainsmesascanyonsplateaus, rivers, and desert lands.

Denver is the capital and the most populous city of Colorado. Residents of the state are properly known as "Coloradans", although the archaic term "Coloradoan" is still in use.


Downtown Denver

Rocky Mountain National Park

The Steamboat Ski Resort in Steamboat Springs, CO.
The Four Corners Monument


Population Statistics

Census Counts (April 1)
20105,029,196221.63 %308,745,538
20004,301,261241.53 %281,421,906
19903,294,473261.32 %248,790,925
19802,889,964281.28 %226,545,805
2000 to 2010 % change16.9 %99.7 %
1990 to 2010 % change52.7 %524.1 %
1980 to 2010 % change74.0 %836.3 %

Components of Population Change in 2014NumberRankPercent of U.S.U.S.
Net Domestic Migration40,3184
Net International Migration10,685191.07 %995,944
Natural Increase (births minus deaths)31,947112.34 %1,363,581
Births66,284221.67 %3,957,577
Deaths34,337271.32 %2,593,996

Economy Statistics

Real Gross Domestic Product by State over Time (millions of chained 2009 dollars)Adj. Amount
RankChange Index
(YR 2009=100)
Change 2010 to 201426,1331210.441

Per Capita Personal IncomeNumberRankPercent of U.S.
Per Capita Income - 2014$48,73015105.6 %
Per Capita Income - 2004 (adj. for inflation)$45,64413106.2 %
Per Capita Income - 1994 (adj. for inflation)$37,11915104.2 %
Per Capita Income - 1984 (adj. for inflation)$33,42312106.2 %
10-Year % Change6.8 %30
20-Year % Change31.3 %29
30-Year % Change45.8 %36