From the Colorado Realtors for the entire state:
Closed sales for Single Family and Townhouse-Condo in January 2021 were 6,721, up 2.1% from 6,580 in January 2020.
Active Listings for Single Family and Townhouse-Condo in January 2021 were 7,577, down 61.0% from 19,404 in January 2020.
Months of Supply was 0.7 Months in January 2021, compared to 1.9 Months in January 2020.
Click on graph for larger image.
This graph from the Colorado Association of REALTORS® shows inventory in Colorado since 2010. Inventory had been steady over the last three years (after trending down following the housing bubble and bust), and then declined significantly during the pandemic.