Iwaki is considered to be very safe for solo female travelers. The city has a low crime rate overall. Locals are respectful and willing to offer assistance if required. One should of course always take common-sense precautions, like not going out alone late at night in deserted areas, as you would anywhere. The transport system is safe and user-friendly too. Moreover, police and security presence is usually evident, there are plenty of well-lit and busy areas, making it a safe destination.