St Croix, in the United States Virgin Islands, is generally safe for solo female travelers. As in any destination, practicing common caution is essential. The locals are friendly and helpful, and most tourist areas are well-patrolled and secure. However, it's advised to avoid less crowded places, particularly after dark. Petty crime like pickpocketing can occur, especially in crowded areas, so keeping your valuables safe is crucial. It's also recommended to secure your accommodation properly when going out. Overall, with some general awareness and appropriate precautions, St Croix can be a lovely and safe destination for solo female travelers.