Killeen, in the United States, offers a mix of urban and suburban life and a relatively safe experience for solo female travelers. However, it should be pointed out that as with any city, some areas might require a higher degree of vigilance. General travel safety measures such as staying aware of your surroundings, avoiding deserted places at night, and using reputed cab services are recommended. As crime rates can somewhat vary, ensure to research and familiarize yourself with the areas you will be visiting.