Illinois Library Systems are membership-based,
regional organizations consisting of academic, public, school, and
special libraries. Illinois is served by two multitype library systems,
each providing services to participating libraries in its region. Statewide,
over 2,500 libraries are members of library
systems. Funding is provided through
the Illinois State Library and the Secretary of State with funds appropriated
by the Illinois General Assembly. Reaching Across Illinois Library System (RAILS) member counties are in grey. Illinois Heartland Library System (IHLS) member counties are in blue.