In the following answer in 知乎, the respondent said the following to a question asking how much it costs to live in Paris:
I would like to know what 外省 means here. 省 means
province so it is clear enough for me that 外省 at least doesn't express the metropolitan place like in Paris.
However, what kind of areas or districts 外省 mean? Is it a suburban or rural? If you relate it to Paris, does it point to somewhere except the central of Paris but in the il-de-france region, or outside of the il-de-france but still in Paris, or totally outside of the Paris?