CO
West38th state

Colorado

The Centennial State

Capital

Denver

Population

5,773,714

Area

104,094 sq mi

Founded

August 1, 1876

Highlights

  • Rocky Mountain National Park, with over 300 miles of hiking trails
  • World-class ski resorts including Aspen, Vail, and Breckenridge
  • Denver, the 'Mile High City' at exactly 5,280 feet elevation
  • Mesa Verde National Park, home to ancient Ancestral Puebloan cliff dwellings

Top Metropolitan Cities

Denver cityscape

Denver

715,522

The 'Mile High City,' a gateway to the Rockies with a booming economy and outdoor culture.

Colorado Springs

478,961

Home to the US Air Force Academy and Pikes Peak, a major military and tourism center.

Aurora

366,623

Colorado's third-largest city, a diverse community east of Denver.

Fort Collins

164,224

Home to Colorado State University and a thriving craft beer scene.

Lakewood

155,984

A suburb of Denver with easy access to Red Rocks Amphitheatre and the mountains.

HempADU City Gallery

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New York City
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Los Angeles
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Las Vegas
Las Vegas

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USA States Guide

A comprehensive reference guide to all 50 US states and their top metropolitan cities.

By the Numbers

  • 50 States covered
  • 4 Geographic regions
  • 250+ Metropolitan cities listed
© 2026 USA States Guide. All rights reserved.Data reflects major metropolitan areas by population.