Depends a lot on the structure/materials of your wall and you're also on the right track by noting location, proper vapor control depends on balancing the climate inside your home versus the conditions outside which obviously varies place to place (part of the reason its so hard to find one answer!). Links below are of the some of best references that I have found, hope it helps.

General rule of thumb "In areas where the climate is cold in the winter, the vapor retarder should be installed on the inner side of the wall near the warm interior space — or on the warm side in winter. In humid climates or areas where there is extensive use of air-conditioning, if a vapor retarder is required, it should be installed on the exterior side of the wall."

https://www.buildingscience.com/documents/digests/bsd-106-understanding-vapor-barriers
https://insulationinstitute.org/im-a-building-or-facility-professional/commercial/installation-guidance/managing-moisture-in-commercial-construction/vapor-retarders/