62 Pa. Stat. § 6000.2
The following words and phrases when used in this act shall have the meanings given to them in this section unless the context clearly indicates otherwise:
"Adoption assistance state." The state other than the Commonwealth of Pennsylvania which is signatory to an adoption assistance agreement in a particular case.
"County agency." The county children and youth social service agency pursuant to section 405 of the act of June 24, 1937 (P.L. 2017, No. 396), known as the County Institution District Law, or its successor, and supervised by the Department of Public Welfare under Article IX of the act of June 13, 1967 (P.L. 31, No. 21), known as the Public Welfare Code.
"Department." The Department of Public Welfare of the Commonwealth.
"Residence state." The state in which the child resides.
"State." A state of the United States, the District of Columbia, the Commonwealth of Puerto Rico, the Virgin Islands, Guam, the Commonwealth of the Northern Mariana Islands or a territory or possession of or administered by the United States.
62 P.S. § 6000.2