While the Census Bureau is not the most accurate source of property tax information, because people often inaccurately report information to it, it has a lot of information on the topic, which the Tax Foundation has collected in a convenient set of documents. The documents also collect interesting information such as the median income of homeowners, something that is higher than the median income of the general population, and median home value data.
Colorado ranks 30th in dollars of property taxes paid per household, 38th in property taxes on homes as a percentage of home value, and 37th in property taxes on homes as a percentage of income.
These statistics understate the importance of property taxes in the Colorado tax base, however, because Colorado's state constitution mandates that Colorado value homes at a lower share of fair market value than the value it assigns to other property. (Some accuracy is lost in this summary as I am intentionally avoiding using the precise property tax terms under state law in this post.)