The BLM is the federal entity responsible to manage public lands, here the user will find data related to the state of Colorado.

The CDOT’s access point to information frequently used for transportation planning and project development. Information is provided on current and projected traffic volumes, state high attributes, summary roadway statistics, demographics, and geographic data.

The states official data source for all public health and environmental quality related geospatial data.

A state maintained repository for hydrological datasets for the state of Colorado. Geographic Information System Data

A very easy to use and query portal to Colorado related demographic data

The official data repository from the Denver Regional Council of Governments. Regional Data Catalog

RTD offers in their website valuable data sources from geospatial datasets to schedule data. RTD

A central portal that hosts official data from several partners, allowing for municipality county, government agency, nonprofit, or individual to have open access to all Colorado related data. City of Boulder

An official portal maintained by the City and County of Denver, your first stop for all Denver related data inquiries. Open Data Catalog