I neglected to mention the method used to find these records on the Familysearch website. Go to the catalog and perform a dual search as follows:
1. Enter Vilnius as the place name
2. select Keyword and enter census
It is interesting to note these records are filed under census rather than separating the records by religion and categorizing the ones for the Jewish community under "Jewish records". Let this be word to the wise sleuth - when searching through Familysearch for records, absolutely do not limit your search to the "Jewish records" section.