55 ILCS 5/3-3034
After the inquest the coroner may deliver the body or human remains of the deceased to the family of the deceased or, if there are no family members to accept the body or the remains, then to friends of the deceased, if there be any, but if not, the coroner shall cause the body or the remains to be decently buried, cremated, or donated for medical science purposes, the expenses to be paid from the property of the deceased, if there is sufficient, if not, by the county. The coroner may not approve the cremation or donation of the body if it is necessary to preserve the body for law enforcement purposes. If the State Treasurer, pursuant to the Revised Uniform Unclaimed Property Act, delivers human remains to the coroner, the coroner shall cause the human remains to be disposed of as provided in this Section. If the police department of any municipality or county investigates abandoned cremated remains, determines that they are human remains, and cannot locate the owner of the remains, then the police shall deliver the remains to the coroner, and the coroner shall cause the remains to be disposed of as provided in this Section.
55 ILCS 5/3-3034