Outlands

Outlands are unoccupied territories outside of any major countries.

Background
The term outland has been in use since the Occupation. Originally, outland referred to any area outside of a Combine city, regardless of the area's status. Its modern usage refers to the unclaimed land outside of officially recognized countries, though is more often used to describe areas that are uninhabitable due to pollution, alien life, radiation, or the cessation zones.

Outlander
An outlander is someone who lives in an outland. The word has a rather pejorative connotation; outlanders are often associated with Benefactor cults or otherwise savage ways of life.