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State Guide38th StateEst. 1876
Colorado State Flag

Colorado

"The Centennial State"

Land of towering mountains, wide-open plains, and clear blue skies. Colorado is home to 54 peaks above 14,000 feet, some of the world's greatest ski resorts, a booming tech sector, and a spirit of western independence that has shaped American history since the Gold Rush.

38th
State admitted to the Union
5.9M
Population (2025 est.)
104K
Square miles, 8th largest
54
Mountain peaks over 14,000 ft

About Colorado

Colorado sits at the crossroads of the American West, a state defined by its dramatic geography, independent spirit, and willingness to lead on national issues before anyone else does. Admitted to the Union on August 1, 1876, just weeks after the nation's 100th birthday, it earned the nickname "The Centennial State" and has been forging its own path ever since.

The Rocky Mountains divide the state in two: to the east, wide open plains roll toward Kansas and Nebraska; to the west, rugged canyons and mesa country stretch toward Utah. The Front Range, Denver, Boulder, Colorado Springs, is one of the fastest-growing metropolitan corridors in America, attracting tech workers, aerospace engineers, and outdoor enthusiasts from across the country.

Colorado has a long history of going first. It was a leader in environmental protection, became the first state to legalize recreational marijuana in 2012, and has consistently ranked among the most educated, healthiest, and economically dynamic states in the nation.

Alpine meadows and snow-capped peaks in Rocky Mountain National Park, Colorado

Geography, Four Main Regions

From the highest peaks in the lower 48 to flat prairie stretching to the horizon, Colorado's geography is one of the most varied of any state.

Skiers descending groomed slopes at a Colorado mountain resort with snow-covered peaks rising in the background

Economy

Colorado's economy is diverse and resilient, built on aerospace, technology, outdoor recreation, agriculture, and energy in roughly equal measure.

Maroon Bells reflected in Maroon Lake in the Elk Mountains near Aspen, Colorado