Colorado State Abbreviation

Author: Jason Coles

Updated On:

Updated On:

State abbreviations are often required when mailing items, filling out forms or ordering things online. Learning the US state abbreviations is extremely useful and important for those living or doing business in the United States.

The US is made up of 50 states, all with their own unique two-letter state abbreviation. It can be an arduous task trying to memorize all 50 of them, especially as many states share similar lettering. This page will help you familiarize yourself with the Colorado state abbreviation.

CO State Abbreviation

The Colorado state abbreviation is made up of the first and second letters of the name, an easy one to remember and use when needed as it reads as: “CO”. There are going to be situations in the future that require you to remember and use the CO (Colorado) state abbreviation.

CO State Abbreviation

There isn’t just one two-letter postal abbreviation per state, there’s also an abbreviation for each individual state. Regular state abbreviations came out in the 1960s, however, many were three or four letters in length and it was decided they would be too long to include on envelopes and packages as addressing equipment couldn’t accommodate these longer state abbreviations in addition to zip codes.

The Colorado state abbreviation is easy to memorize compared to others as it is just the first four letters of the word Colorado with the addition of a period at the end, written down and referenced as: “Colo.”. Colorado is becoming increasingly popular, not only with tourists visiting in the winter and summer months but with people moving to the state for work, business opportunities, or simply to be nearer family. Colorado is known as The Centennial State. It got its nickname because it became a state in 1876, 100 years after the signing of America’s Declaration of Independence. Colorado is also known as “Colorful Colorado” due to its magnificent scenery of mountains, rivers, and plains.

If you are a business owner or employee based in Colorado you may be interested in keeping up to date with the Colorado minimum wage. Our page that is dedicated to this includes updates, the latest increases, history of the minimum wage and what it was in previous years, and more.

People use state abbreviations all the time in everyday life and in business, it is important to understand the unique two-letter abbreviation representing each state in the U.S. as the probability of you needing to memorize it is very high.

Check out our United States Abbreviations table where you can see each state’s unique two-letter postal abbreviations and regular abbreviations, including Colorado (CO). The table is organized alphabetically for your convenience.

US State Initials


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Jason Coles

Jason Coles is the Founder of Foreign USA and its Chief Content Writer and Editor. Recognized as a prolific business plan writer by many prominent immigration attorneys in the U.S. who refer his services to their clients regularly, Jason has written over 1,350 business plans across the past 17+ years for start-up companies and franchises looking to expand their footprint in the United States. Jason is considered a seasoned expert in his field. He creates detailed business plans for his clients that include five-year financial projections, market and industry analysis reports, demographic studies, organizational charts, job descriptions, employee hiring plans, and more.