Mental Retardation Services in Mercer County, Western Pennsylvania. Diversified Family Services is a nonprofit social service agency located in Mercer County, Pennsylvania.

This page is best viewed through a Java enabled browser. Click on Mental Retardation Services in Mercer County to continue. Thank you. Diversified Family Services is a nonprofit social service agency located in Mercer County, Pennsylvania. We provide a variety of services to adults and children with mental retardation. We also provide foster care services to children & teens of several counties in western Pennsylvania.