Cairnlea is generally considered an average suburb compared to other suburbs in Melbourne. Crime rates are below the Greater Melbourne average, with Assault being the most commonly reported violent crime, and Theft the most commonly reported property crime. From 2023 to 2024, Violent crime rates have increased by 8%, and Property crime rates have decreased by 15.93%.

As with any area, it is recommended to stay aware of your surroundings and take the usual safety precautions.