755 ILCS 20/7
The county treasurer shall keep just and true accounts of all moneys paid into the treasury, and if any person appears within 10 years after the death of the intestate and claims any money paid into the treasury as his or hers, on legal representation such person may file a petition in the circuit court of such county, stating the nature of the claim and praying such money may be paid to the claimant. A copy of such petition shall be served upon the State's Attorney of such county, who shall file an answer to the same, and the court shall thereupon examine the claim and the allegations and proofs, and if it finds that such person is entitled to any money paid into the county treasury, the court shall by order direct the county clerk to issue an order upon the county treasurer for the payment of the money, but without interest or costs. It is the duty of county boards to see that such amounts are paid in full without discount. A copy of the order of the court shall be a sufficient voucher for drawing such order. If any person appears and claims any lands vested in the county above stated, within 5 years after the judgment was entered, such person (other than such as were served with a copy of the order entered pursuant to Section 3 of this Act or filed an appearance in the proceeding, their heirs or assigns), may file a petition in the circuit court of the county in which the lands claimed lie, setting forth the nature of the claim and praying that the lands be relinquished to the petitioner. A copy of such petition shall be served on the State's Attorney of the county, who shall file an answer. The court shall thereupon examine the claim and the allegations and proofs, and if it appears that such person is entitled to the lands claimed, the court shall enter an order accordingly, which shall be effectual for divesting the interest of the county in or to the lands, but no costs shall be adjudged against the county. All persons who fail to appear and file their petitions within the times limited, herein, shall be forever barred, saving, however, to minors and persons under legal disability the right to appear and file their petition as hereinabove set out, at any time within 5 years after their respective disabilities are removed. However, the county board of such county may cause such lands to be sold at any time after seizure, in which case the claimant shall be entitled to the proceeds of such sale in lieu of the lands, upon obtaining a judgment or order as hereinabove set out.
All persons beyond the limits of the United States, as to whom a right to petition under this Section is otherwise barred by this amendatory Act of 1961 or will be barred within one year after the effective date of this amendatory Act of 1961, may file a petition pursuant to this Section at any time within 2 years after such effective date.
755 ILCS 20/7