Stevenage, located in the United Kingdom, is generally known to be quite safe, especially for solo female travelers. As with any place, there are certain areas that may be less secure at night, but in general, the city is secure with police visibility and ample surveillance. Public transport is dependable and the locals are generally friendly and respectful. However, it's always advisable to take standard precautions, especially during the night and keep an eye on your personal belongings at all times.