Public library

A public library is an institution or service supported by a community to provide access to information, knowledge and works of the imagination. IFLA/UNESCO guidance describes public libraries as existing in a wide range of societies and says their services and structures differ with local circumstances. The 2022 IFLA-UNESCO Public Library Manifesto presents the library as a public force for education, culture and information.

The idea of public service is central: collections and services are intended for the wider community, not only for members of a school, university or private association. The 2001 IFLA/UNESCO guidelines treat equal access as a principle, including attention to language, disability, age, location and other barriers. In practice, membership rules, opening hours, funding and the range of services are set by local laws and institutions, so the experience is not identical everywhere.

Books remain a familiar part of public library collections, but libraries also provide periodicals, reference materials, local records, audiovisual media and electronic resources. Depending on local needs and capacity, services can include lending, information and research assistance, literacy and learning activities, cultural events, access to computers or the Internet, and support in using digital information. Not every library offers every service; collections and programmes are generally shaped by the community it serves.

Libraries also help people discover and assess information. Staff organize and describe materials so they can be found, guide users to sources and may preserve local history or make community information available. Services can extend beyond a building through branch networks, mobile libraries, online catalogues, digital collections and outreach to people who cannot readily visit in person.

Public libraries are commonly organized through local or regional public agencies, although the legal and financial arrangements differ among countries and may involve more than one level of government or community organizations. Their local character affects decisions about branch locations, languages, collections, accessibility, staffing and programme priorities. Sustained funding and trained staff are important to maintaining services, while differences in infrastructure and resources can limit what a library is able to provide.

National surveys illustrate how library systems are monitored. In the United States, the Institute of Museum and Library Services conducts an annual Public Libraries Survey covering roughly 9,000 public libraries and about 17,000 outlets, including branches and bookmobiles. The survey collects measures such as visits, circulation, collections, public-service hours, staffing, electronic resources, revenues and expenditures. This is a U.S. example, not a global count or a description of every national system.

Public libraries support both formal and informal learning by making reading and study materials available and helping users make use of them. Their cultural role can include representing local languages and traditions, hosting exhibitions or programmes, and preserving materials about a community. Libraries may also serve as shared civic spaces where people can read, study, find information or take part in public activities. These roles vary with local priorities and resources.

Access to digital tools and information has become part of many library services, alongside print and in-person assistance. IFLA/UNESCO guidance identifies public access to information technology and support for information skills as ways libraries can help address gaps in access. A library can contribute to digital inclusion, but it cannot by itself remove wider barriers such as poor connectivity, limited devices or unequal access to education.

Public libraries have developed through different histories and institutional arrangements rather than a single worldwide model. The IFLA-UNESCO Public Library Manifesto was first created in 1949 and has been revised over time; the 2022 edition was updated to reflect changes in technology and society. Many public libraries now combine print collections with digital resources and services, expanding the ways people may discover and use library materials, while questions of access, preservation, staffing and funding remain important.

The library is therefore best understood not only as a building or a collection of books, but as a locally organized public service whose resources and delivery methods change with community needs.