Preliminary information indicates the girl was playing outside a Cooba Close home, which backs onto bushland when she received a superficial laceration to hear head from what is believed to be a small caliber bullet.
The girl was taken to hospital as a precaution.
Police have conducted a door knock of the area and investigations into the incident continue.
District Duty Officer Senior Sergeant Ed Hackenberg said such incidents are treated seriously by police.
“Police are taking this incident very seriously and are looking into whether someone was in nearby bushland firing a small caliber firearm.
“Police would just like to remind owners of firearms of the dangers of discharging a weapon out in the open with projectiles travelling great distances.”
Anyone with information which could assist police with their investigations should contact Crime Stoppers anonymously via 1800 333 000 or crimestoppers.com.au 24hrs a day.
Crime Stoppers is a charitable community volunteer organisation working in partnership with the Queensland Police Service.