Based on available data, Islamabad is generally considered the city in Pakistan with the lowest crime rate. It's the capital city and benefits from a robust police force and infrastructure, contributing to its safety.
While other cities like Lahore and Karachi have higher crime rates, Islamabad stands out as a comparatively safer urban environment.
However, it's essential to remember that crime rates can fluctuate and vary within cities, and it's always a good idea to exercise caution and be aware of your surroundings regardless of location.