Portal:Colorado

The Colorado Portal

Colorado is the state of the United States of America that encompasses most of the Southern Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the high western edge of the Great Plains. Admitted to the Union on August 1, 1876, Colorado became the 38th U.S. state. Colorado ranks 21st in population, eighth in total area, and first in mean elevation among the 50 U.S. states. Fifty-five of the 124 highest major mountain peaks of North America rise in Colorado. The United States Census Bureau estimates that the population of the State of Colorado was 5,957,493 on July 1, 2024, an increase of +3.18% since the 2020 United States Census. Denver is the state capital, the most populous city, and the heart of the most populous metropolitan area of the Rocky Mountain Region. Colorado Springs is the state's second most populous city. While the population of the Front Range Urban Corridor exceeds five million, many rugged portions of the state remain pristine wilderness.

WikiProject Colorado

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Colorado Events

  • Wikimedia US Mountain West Summer 2026 online meeting, Tuesday, August 18, 2026, 8:00-9:00 PM MDT
  • Wikimedia US Mountain West Autumn 2026 online meeting, Tuesday, November 10, 2026, 8:00-9:00 PM MST
  • Events elsewhere

Colorado Facts

State of Colorado

Class 2. John Hickenlooper (D) (2021–)
Class 3. Michael Bennet (D) (2009–)
1. Diana DeGette (D) (1997–)
2. Joe Neguse (D) (2019–)
3. Jeff Hurd (R) (2025-)
4. Lauren Boebert (R) (2025-)
5. Jeff Crank (R) (2025-)
6. Jason Crow (D) (2019–)
7. Brittany Pettersen (D) (2023-)
8. Gabe Evans (R) (2025–)

State Symbols

State flag: Flag of the State of Colorado                State seal: Great Seal of the State of Colorado
State motto: NIL SINE NUMINE (Latin: Nothing without providence)
State nickname: The Centennial State
State slogan: Colorful Colorado
State amphibian: Western Tiger Salamander
(Ambystoma mavortium)
State bird: Lark Bunting
(Calamospiza melanocoryus Stejneger)
State cactus: Claret Cup Cactus
(Echinocereus triglochidiatus)
State fish: Greenback Cutthroat Trout
(Oncorhynchus clarki somias)
State flower: Rocky Mountain Columbine
(Aquilegia caerulea)
State grass: Blue Grama
(Bouteloua gracilis)
State insect: Colorado Hairstreak Butterfly
(Hypaurotis cysaluswas)
State mammal: Rocky Mountain Bighorn Sheep
(Ovis canadensis)
State pets: Colorado shelter pets
(Canis lupus familiaris & Felis catus)
State reptile: Western Painted Turtle
(Chrysemys picta bellii)
State tree: Colorado Blue Spruce
(Picea pungens)
State fossil: Stegosaurus
(Stegosaurus armatus)
State gemstone: Aquamarine
State mineral: Rhodochrosite
State rock: Yule Marble
State soil: Seitz soil
State folk dance: Square Dance
State ship: USS Colorado (SSN-788)
State songs: Where the Columbines Grow & Rocky Mountain High
State sport: Pack Burro Racing
State highway route marker:
Route marker for Colorado State Highway 5
State tartan:
Colorado State Tartan
Commemorative U.S. coin:
Commemorative U.S. stamp:
Colorado Statehood stamp

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Featured article -

There are 17 National Natural Landmarks in U.S. state of Colorado, one of which extends into Wyoming. They cover areas of geological, biological and historical importance, and include lakes, mountains, rock formations and numerous fossil sites. The landmarks are located in 14 of the state's 64 counties. Five counties each contain all or part of two NNLs, while two landmarks are split between two counties. The first two designations, Slumgullion Earthflow and Summit Lake, were made in 1965, while the most recent designation, Glenwood Caverns and Iron Mountain Hot Springs, was made in 2023. Natural Landmarks in Colorado range from 60 to 380,000 acres (24.3 to 153,780.5 ha; 0.1 to 593.8 sq mi) in size. Owners include private individuals and several municipal, state and federal agencies.

The National Natural Landmarks Program is administered by the National Park Service, a branch of the Department of the Interior. The National Park Service determines which properties meet NNL criteria and, after notifying the owners, makes nomination recommendations. The Secretary of the Interior reviews nominations and, based on a set of predetermined criteria, makes a decision on NNL designation or a determination of eligibility for designation. Both public and privately owned properties can be designated as NNLs. Owners may object to the nomination of the property as a NNL. This designation provides indirect, partial protection of the historic integrity of the properties via tax incentives, grants, monitoring of threats, and other means.

(Full article...)

Selected mountain -

Mount Lincoln 14,293 feet (4356.5 m)
The highest summit of Mosquito Range and the entire Missouri River drainage basin.

Selected biography -

William Jackson Palmer
William Jackson Palmer
William Jackson Palmer (September 18, 1836 – March 13, 1909) was an American civil engineer and veteran of the American Civil War. During the Civil War, he was promoted to brevet brigadier general and received a Medal of Honor for his actions.

In his early career, Palmer helped develop the expanding railroads of the United States in Pennsylvania; this was interrupted by the American Civil War. He served in colorful fashion as a Union Army cavalry Colonel and was appointed to the brevet grade of Brigadier General. After the war, he contributed financially to educational efforts for the freed former slaves of the South.

Heading west in 1867, Palmer helped build the Kansas Pacific Railway. He befriended a young English doctor, Dr. William Abraham Bell, who became his partner in most of his business ventures. Generally Palmer took the role of president with Bell as vice president. The two men are best known as co-founders of the Denver and Rio Grande Railroad (Rio Grande). The Rio Grande and its successors eventually operated the largest network of narrow gauge railroad in the United States. They were ultimately absorbed by the 21st century Union Pacific Railroad. (Full article...)

Selected article -

Pony Express advertisement

The Pony Express was an American express mail service that used relays of horse-mounted riders between Missouri and California. It was operated by the Central Overland California and Pikes Peak Express Company.

During its 18 months of operation beginning in 1860, the Pony Express reduced the time for messages to travel between the east and west US coast to about 10 days. It became the west's most direct means of east–west communication before the first transcontinental telegraph was established (October 24, 1861), and was vital for tying the new state of California with the rest of the United States. (Full article...)

Selected image -

The Colorado State Capitol in Denver
Photograph by L. Chang, 2004

National Parks in Colorado

Rocky Mountain National Park

The 23 national parks in Colorado:

Interesting facts-

Smoke from the Cameron Peak Fire

Did you know (auto-generated) -

Colorado United States U.S. counties
U.S. History U.S. Roads U.S. Streets
Geology Mountains Rivers
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