Monterey and Carmel in the United States are generally considered very safe for solo female travelers. The locals are friendly and the environment is safe and secure. Both towns have low crime rates and are easy to navigate, with police and public services readily available. Respectful interactions are the norm, while street lighting, visible security presence, and community-focused safety measures contribute significantly to overall safety. Use usual precautions like being vigilant about your surroundings, especially during the night, and your experience should be a pleasant one.