Illinois Relocation Statute

 750 Ill. Comp. Stat. § 5/609

§ 5/609.  Leave to Remove Children

   Sec. 609. Leave to Remove Children. (a) The court may grant leave, before or after judgment, to any party having custody of any minor child or children to remove such child or children from Illinois whenever such approval is in the best interests of such child or children. The burden of proving that such removal is in the best interests of such child or children is on the party seeking the removal. When such removal is permitted, the court may require the party removing such child or children from Illinois to give reasonable security guaranteeing the return of such children.

(b) Before a minor child is temporarily removed from Illinois, the parent responsible for the removal shall inform the other parent, or the other parent's attorney, of the address and telephone number where the child may be reached during the period of temporary removal, and the date on which the child shall return to Illinois.

 The State of Illinois retains jurisdiction when the minor child is absent from the State pursuant to this subsection.