The following are a few places that you can start looking for open data. Please note that not everything stored on these sites is open, and you should check each dataset for a permissions or licensing statement.
This is a great place to start looking into open government data if you want federal-level information. It also hosts information from other levels of government (such as county, city, and state level information).
This is the official open data portal for the state of Colorado. If you are looking for state level information this is a great place to start your search.
Institutional Data, Effectiveness, and Analytics (IDEA) is one place you can find information about UCCS. It mostly features data visualizations instead of datasets, though you can request the data from them on their page.
The Berkeley Library at the University of California has a list of Non-Governmental Organizations that can be a great place to find data outside of governmental sources.