There are approximately 641 to 648 high schools in Colorado. One source lists 648 total high schools by county in the state

, while another source states there are 641 high schools composed of 551 public and 90 private schools

. Additionally, U.S. News reports about 504 public high schools in Colorado

, and Niche mentions 520 public high schools

, which aligns with the total including private schools. Thus, the total number of high schools in Colorado is around 640 to 650.