In 2026, the United States will mark the 250th anniversary of the Declaration of Independence—our nation’s semiquincentennial. At the same time, Colorado will mark the 150th anniversary of our entrance into the Union—our state’s sesquicentennial. As the Centennial State, Colorado is the only one who will observe twin anniversaries—our Sesquisemiquincentennial.
As we celebrate this uniquely Colorado commemoration, we invite you to pause, reflect upon, and honor Colorado’s shared history as we imagine our future together through community events, educational opportunities, statewide celebrations, and more. SEE FREEDOM PLANE EVENT HERE.
The America 250 – Colorado 150 Commission was established to guide Colorado’s twin commemorations in ways that enable all Coloradans to participate. We encourage Coloradans from all corners of our state to undertake diverse, imaginative efforts to remember our shared past and imagine a unified future. As we create opportunities to commemorate and celebrate Colorado’s stories, the Commission is committed to recognizing that our shared history includes the experiences of all who have called Colorado home.
2026 will be an opportunity for us to come together as we celebrate Colorado by acknowledging our complete shared history, honor what makes Colorado unique, and recognize our shared destiny as we strive toward a more perfect union.
We acknowledge that the land currently known as Colorado has been the traditional homelands of Indigenous peoples since time immemorial.