The following Application Support Center(s) service Virgin Islands:
Saint Croix, US Virgin Islands.
The address is:
USCIS Application Support Center
5-8A Sunny Isle Shopping Center
Christiansted, St Croix, U.S. Virgin Islands 00821.
Saint Thomas, US Virgin Islands.
The address is:
USCIS Application Support Center
8000 Nisky Center
Suite 1A, Lower Level South, 1st Floor
St. Thomas, US Virgin Islands 00802.