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The Default path for All Microsoft Office Outlook .pst file location is the User data(Your account name)/Local Settings/Application Data/Microsoft/Outlook/ this is where the .pst files are stored by default!!! this goes for All Windows OS! Tuesday, June 05, 2012 12:18 PM.
Most of your Outlook data is stored in what is called a PST file. If you are connected to a Microsoft Exchange server, your data will be stored in an OST file. PST stands for Personal Storage Table, OST for Offline Storage Table. You may be wondering where this PST file is actually stored in Outlook, and what exactly is saved on this file.