Illinois Public Library Annual Report (IPLAR) Data Illinois State Library


The Illinois State Library is the agency legally required to compile, preserve and publish public library statistical information [15 ILCS 320/7(m)]. Below are links to some of the self-reported data from the latest collection period. Please note that this data has not been verified and is not suitable for publication purposes. The full data set can be requested by calling 217–785–1168 or emailing

Public Libraries Survey Preliminary Data

The State Library participates in the national Public Libraries Survey (PLS), which is administered annually by the Institute of Museum and Library Services (IMLS). Data submitted to the PLS goes through a vetting process to ensure accuracy. Preliminary data is returned to the states annually, but is not considered finalized until published by IMLS. Not all data elements collected through the IPLAR are reported as part of the PLS.

The PLS also does not include data for libraries that do not meet the federal definition of a public library. Therefore, some Illinois libraries are not included in this data set. The PLS data is now available.

PLS Published Data

Public Libraries in the United States Survey, which is published online, provides a national-level analysis of the PLS that aggregates data from all 50 states, the District of Columbia, and outlying territories to provide national estimates and trends. Public library data files (public use) are also released by IMLS for each fiscal year, and made available on their website.

Additionally, key information from the PLS on more than 9,000 public library systems and over 17,000 public library outlets is available at Library Search and Compare.

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