# Content The Public Libraries Survey (PLS) is conducted annually by the Institute of Museum and Library Services under the mandate in the Museum and Library Services Act of 2010. The data file includes all public libraries identified by state library administrative agencies in the 50 states and the District of Columbia. The reporting unit for the survey is the administrative entity, defined as the agency that is legally established under local or state law to provide public library service to the population of a local jurisdiction. The FY 2014 PLS collected state characteristics data, including the state total population estimate, number of central and branch libraries, and the total library visits and circulation transactions, and data on each public library, such as its name and location, population of legal service area, print and digital collections, full-time-equivalent staff, and operating revenue and expenditures. # Acknowledgements The U.S. Census Bureau is the data collection agent for IMLS Public Libraries Survey.