Public Libraries in the United States Survey, 2016-2018

The Public Libraries Survey (PLS) is a voluntary census of public libraries conducted annually by the Institute of Museum and Library Services (IMLS). The Fiscal Year (FY) 2016, 2017, and 2018 surveys are the 28th, 29th, and 30th in the series, respectively. The American Institutes for Research (AIR) served as the data collection agent for all three surveys.
The PLS data files include all public libraries identified by state library administrative agencies in the 50 states, the District of Columbia and the outlying territories of American Samoa and Guam. The Northern Mariana Islands participated in FY 2017 and FY 2018, and the U.S. Virgin Islands participated in FY 2018. The reporting unit in each state or territory for the survey is the administrative entity (AE), 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. In this survey, the terms public library and public library system mean an AE. The AE may have a single outlet or multiple outlets. The term "outlet" refers to a library point of service, which may be a physical building, bookmobile, or a books-by-mail provider. Each PLS collected the following information:

Data from each public library, such as its name and address, population of legal service area, service outlets, collections, full-time-equivalent (FTE) staff, and operating revenue and expenditures (see Appendix F). These data were reported in the AE record.
State characteristics data, including the state total population estimate, the total unduplicated population of legal service areas for the state, and the state's reporting period start and end dates (see the survey questionnaire in Appendix F, items 100-103). Each state library administrative agency reported these data in the state characteristics record because they are not library-level data.
Data from each public library service outlet, such as its name and address, type, county location, square footage, public service hours per year, and number of weeks it is open (see Appendix F). These data were reported in the outlet record.

This data collection is useful to researchers, journalists, the public, and policymakers at the federal, state, and local levels. These data are used by federal, state and local officials, professional associations, and local practitioners for planning, evaluation, and policy making.