Stateline, is generally a safe location for solo female travelers. It is a popular tourist area with law enforcement presence and decent infrastructure, particularly around the casinos and ski resort. Always use common sense and take typical travel safety precautions, such as not walking alone at night in unfamiliar areas and keeping your belongings secure. The majority of locals are respectful and helpful. Like with any destination, it's good to stay updated on the current situation and be aware of your surroundings.