The Municipal Branch of the Upper Darby Township & Sellers Memorial Free Public Library serves over 85,000 residents in the city of Upper Darby, in Delaware County, Pennsylvania. The library system holds a collection of over 135,500 volumes, magazines, CDs, DVDs, and electronic resources and circulates 340,410 items per year. The branch offers materials and services for children, teens, and adults and is open for services from 10 AM, Monday to Saturday.