Google GL Parameter Countries

The gl parameter value is a two-letter country code. When used in Google search queries, the gl parameter boosts search results whose country of origin matches the parameter value.

Assigning a specific value to the gl parameter in Google search requests enhances the relevance of the returned search results. This becomes particularly significant for users outside the United States, specifically those in non-U.S. English-speaking countries.

You can download the full JSON list of supported Google Countries:
Download

The following values are valid for the gl search parameter.