Public Domain: In the US, most federal government data is considered to be in the public domain. This means it's generally free to use without restrictions, as taxpayers have already paid for its creation.

Open Data Initiatives: Many governments have open data initiatives that encourage the use and reuse of government data. For example, Data.gov in the US provides access to a wide range of federal datasets intended for public use.

Licenses: Some government agencies may apply specific licenses to their data. These licenses typically allow for broad use but may have some conditions, such as attribution requirements.