Colorado Abbreviation – CO

Colorado Abbreviation

Colorado Abbreviation - CO

The abbreviation for the state of Colorado is “CO”. The abbreviation is formed by taking the first two letters of the state’s name and using them as a shortened form. This two-letter abbreviation is commonly used on postal addresses, driver’s licenses, license plates, and other official documents.

The use of two-letter abbreviations for states is standardized in the United States Postal Service’s “Address Management System.” This system assigns a unique two-letter code to each state and territory in the United States, as well as to military addresses and diplomatic missions.

If writing a letter to the Colorado State Capitol, the address would be addressed in. this way –

Colorado State Capitol

200 E Colfax Ave, Denver, CO 80203

Colorado Nicknames - Centennial State

On “August 1, 1876”, the Colorado Territory was officially adopted into the Union. Joining the States exactly 100 years after the Declaration of Independence, Colorado gained the nickname Centennial (100 Year) State. Colorado was the “38th State” of the Union. 

Colorado Nicknames - Colorful Colorado

The state nick-name Colorful Colorado became iconic around the early 1950’s when the first “Welcome to Colorful Colorado” signs were installed along major highways near the Colorado State Boarder. There are currently a total of 41 “Welcome to Colorful Colorado Signs” greeting visitors from Wyoming, Kansas, New Mexico, and Utah. There are also two “Leaving Colorful Colorado Signs” at the Utah and Kansas Border. The State of Colorado primarily derived its nickname form the Spanish word ROJO meaning RED. Because of its predominant red dirt and purple tinted mountains, the name Colorful Colorado became an iconic part of the states identity.

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