The library makes extensive collections of books and other materials on various subjects available to its readers, for off premises lending. It offers among others, literature for adults, popular science and scientific literature, books for children and teenagers. Deserving of special attention are: regional collections, maps and plans, foreign language literature, required reading books, school and academic studies, travel guides, and best sellers.
Lending of collections is conducted by: Main Library, Children and Teenagers Branch, Music Library and municipal branches.
The largest collections, for off premises lending are offered by the Main Library at Dąbrowskiego 33a street.
The readers of the Main Library have at their disposal over 74 thousand volumes, among them books /including literature, and scientific and popular science literature/, cartography, standards, films and theatre performances on DVDs and V CDs, audio books, and foreign language publications.
The books gathered in reading rooms, and book collections of public reference libraries of Rzeszow are available to users for in-library use only.
These book collections include: scientific publications, encyclopedic publications, dictionaries and handbooks, materials about the region and magazines.
The largest, in-library use collections are offered by the Main Reading Room at Sokoła 13 street. These collections include over 120 thousand book volumes, and extensive special collections: manuscripts, old prints, graphics, cartography and annual bound volumes of periodicals. The reference library of the Main Reading Room contains large numbers of information publications in Polish, English, German, Russian and French.