SAINT CROIX County, VI Covers 9 ZIP Codes ZIP Code Area Code(s) Timezone 00823 340 Atlantic 00824 340 Atlantic 00840 340 Atlantic 00841 340 Atlantic Click to see full answer. Just so, what is St Croix area code? Area code 340 One may also ask, what is the airport in St Croix? TISX Likewise, people ask, what is the zip code for Virgin Islands? Charlotte Amalie West, U.S. Virgin Islands Charlotte Amalie West • Total 5,146 ZIP code 00801, 00802, 00803, 00804 Area code(s) 340 Where is zipcode 00820? Christiansted, U.S. Virgin Islands