List of All 63+ Colorado Online Casinos (September 2025)

Real money online casinos in Colorado are illegal, even though lawmakers have made attempts to pass bills for legalization.

However, Colorado players can still enjoy sweepstakes and social casinos, where they can play online casino games and earn 'gold coins' as rewards.

List of Colorado online casinos

Here is a list of the best online casinos in Colorado as of September 2025.

Each CO online casino listed below is legal and licensed by the Colorado Department of Revenue.

In the last column you will find the top Colorado online casinos no deposit bonus:

Top online casinos in Colorado reviewed

In the following sections, you can read our mini-reviews of the best online casinos Colorado residents can play.

See our analysis of each platform and what that specific casino site is recommended for, so you can make the best choice for your gambling needs.

1. Spree - Best online casino Colorado for RTP percentage

2. Stake.us - Best Colorado online casino for payout speed

3. High 5 Casino - Best Colorado casino site for game variety

4. NoLimitCoins - Best for daily Colorado casino bonuses

5. Funrize - Best for customer support

Best Colorado online casinos compared 2025

How we rate & rank CO online casinos

Our goal is to provide you with objective, concise reviews of Colorado online casinos, highlighting their key strengths and weaknesses.

We use a set of essential criteria to evaluate each casino, ensuring effective comparison.

1. Game selection: We examine the variety and quality of casino games, like roulette or online casino slots, ensuring a broad online casino gaming experience.

2. Bonuses & promotions: We review the generosity and fairness of a casino's welcome bonus, no-deposit offers, and ongoing promotions, with a focus on transparent terms.

3. Mobile compatibility: We test the platform's mobile online casino performance, including app features, to ensure a seamless gaming experience on all devices.

4. Payment methods: We assess the range of deposit and withdrawal options, processing times, and any fees, prioritizing instant withdrawal casinos.

5. Security: We verify that the site is licensed in the US and uses top-tier security measures like SSL encryption, so we only recommend safe online casinos USA.

6. Customer support: We evaluate the responsiveness and effectiveness of support options, including live chat, email, and phone.

7. Fair play: We review game fairness, focusing on return-to-player (RTP) rates and the integrity of random number generators, so players can gamble securely. Take a look at the highest payout online casinos for this feature.

We download each top online casino and interact with the platform ourselves, using our own money to test the quality.

If we do not recommend the site to our friends and family, we will not recommend it to you!

This streamlined approach ensures you can make informed decisions based on what matters most in your online gambling experience.

How do I choose a Colorado online casino for me?

• Game variety: Look for an online casino that offers a wide range of games that cater to your preferences, whether it’s slots, table games like blackjack or roulette, or live dealer experiences. More game options can enhance your overall entertainment.

• Bonuses and promotions: Evaluate the welcome bonuses, daily promotions, and loyalty rewards available at different casinos. Look for attractive offers like free coins, daily rewards, or sweepstakes bonuses, which can make your gameplay more exciting and rewarding.

• Payout speed and banking options: Check how quickly the casino processes payouts and the variety of deposit and withdrawal methods available. Casinos that support various payment options, like credit cards, e-wallets, and even cryptocurrency, along with fast payout times, ensure a smoother experience.

• Payout percentage (RTP): Consider the casino’s average Return to Player (RTP) rate, which indicates how much you can expect to win over time. Higher RTP percentages usually translate to better winning opportunities for players.

• User experience and mobile compatibility: If you want to play on the go, ensure the casino has a mobile-optimized site or app that offers seamless gameplay on smartphones and tablets. A good user interface and easy navigation can make a big difference in your overall gaming experience.

• Reputation and customer support: Choose social casinos with a solid reputation for security, fair gaming, and excellent customer service. Responsive support can be critical if you run into any problems while playing, so look for casinos that offer 24/7 live chat, email, or phone assistance.

Best Colorado casino apps

Here's a list of the best Colorado online casino apps with their App store rating for iOS and Android.

Colorado online gambling laws

Online gambling in Colorado is somewhat limited by current state laws.

While real-money online casinos are not yet legalized, the state allows for online sports betting and social or sweepstakes casinos.

These social casinos operate legally by offering virtual currencies like Gold Coins, which can be used for play, and Sweeps Coins, which can be redeemed for cash prizes.

Colorado legalized online sports betting in 2019 with the passing of Proposition DD, which became active in May 2020.

Currently, more than 40 licensed sportsbooks operate within the state.

Although real-money online casinos are prohibited, players can still enjoy online slots and table games at sweepstakes casinos, which operate legally under existing sweepstakes laws.

Colorado’s gambling history dates back to the early 1990s.

In 1990, voters passed the Legalization of Limited Gambling Initiative, which allowed limited-stakes casino gambling in the historic mining towns of Black Hawk, Central City, and Cripple Creek.

The first casinos opened in 1991, initially with a $5 bet cap and restricted hours.

This changed with Colorado Amendment 50 in 2008, which raised the maximum bet limit to $100 and allowed 24/7 operation.

The state has since expanded its gambling options, including tribal casinos, horse racing, and a state lottery.

In 2019, the approval of Proposition DD marked a significant step forward, legalizing sports betting and opening up new opportunities for the online gambling industry.

Responsible online gambling Colorado

Before we end this article, we need to caution you to always bet and play responsibly on the top Colorado casinos online.

To ensure you’re being cautious, these casinos implement various responsible gambling practices that will help you keep your betting habits in check and prevent unhealthy behaviors.

• Limits: Online casinos allow you to set betting limits, i.e. limit how much you can bet in a day, a week, or a month.

• Cashouts: You can withdraw your winnings quite easily from any online casino. This prevents you from spending all of your winnings. There’s also the option for early cashout, so you can still get paid if the bet is starting to go sideways.

• Help & resources: Casinos provide access to resources for problem gamblers and point them to organizations that can help with gambling addiction.

Responsible gambling organizations and charities in the US

Frequently asked questions

Editorial policy

Our editorial policy ensures extensively researched, accurate, and unbiased content through strict sourcing standards and diligent review by top online gambling experts and seasoned editors.

This process maintains integrity, relevance, and value in all of our content for our readers.

References

To test casino sites accurately, we dive into analytical research of the online casino gambling industry, to understand what features are best for you.

Below are the references we use when making these decisions on their levels of security:

• The Division of Gaming

• Colorado Gaming Association

• Problem Gambling in Colorado

• American Gaming Association

• https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10397135/