The minor victim girl was admitted in a critical condition to the PGIMS, Rohtak where she was undergoing treatment, they said.
In a complaint filed with the police, the parents of the minor victim said, the incident took place in the early hours on Sunday.
The girl was sleeping beside them in a cottage close to a residential colony, when she was abducted by an unknown person, who took her away to an isolated place and raped her, the parents said in the complaint.
A case of abduction and rape was registered by the police against the unknown accused.
The victim's father is a migrant labourer of Madhya Pradesh, police said.
A senior police official said efforts were on to trace and apprehend the culprit.