- Class 2. John Hickenlooper (D) (2021–)
- Class 3. Michael Bennet (D) (2009–)
- 1. Diana DeGette (D) (1997–)
- 2. Joe Neguse (D) (2019–)
- 3. Lauren Boebert (R) (2021–2025)
- 4. vacant
- 5. Doug Lamborn (R) (2007–2025)
- 6. Jason Crow (D) (2019–)
- 7. Brittany Pettersen (D) (2023-)
- 8. Yadira Caraveo (D) (2023–)
- Total area: 104,094 square miles (269,602 km2) (eighth most extensive state)
- Land: 103,718 square miles (268,628 km2) = 99.64%
- Water: 376 square miles (974 km2) = 0.36%
- Highest elevation: Mount Elbert 14,440 feet (4,401.2 m) (third highest state)
- Mean elevation: 6,800 feet (2,070 m) (highest state)
- Lowest elevation: Arikaree River 3,317 feet (1,011 m) (highest state)
- Population (2020 census): 5,773,714 (21st most populous state)
- Population density: 55.47 per square mile (21.40 km−2) (39th most densely populated state)
- Number of counties: 64 counties (including two consolidated city and county governments)
- Number of municipalities: 273 municipalities, comprising 2 consolidated city and county governments, 73 cities, and 198 towns
- Time zone: MST=UTC−07, MDT=UTC−06
- USPS code: CO
- ISO 3166 code: US-CO
- Adjacent U.S. states: Wyoming, Nebraska, Kansas, Oklahoma, New Mexico, Arizona, Utah (tied for third most)
- State government website: Colorado.gov
- State tourism website: Colorado.com