The Syrian Observatory for Human Rights reported Monday that 1,465 Islamic State members have been killed by US-led air strikes since September 23, 2014.
Over 1,000 civilians have also been killed in the attacks, the London-based organization reported.
Hundreds more have been wounded by the air strikes, among them 62 civilians. Eight of the civilians injured were children.
The observatory emphasized that the numbers presented were only of documented cases, saying the number is likely much higher if undocumented cases were to be factored in.