The Connecticut State Library is an Executive Branch agency of the State of Connecticut. The State Library provides a variety of library, information, archival, public records, museum, and administrative services for citizens of Connecticut, as well as for the employees and officials of all three branches of State government. The State Library also serves students, researchers, public libraries and town governments throughout the state. In addition, the State Library directs a program of statewide library development and administers the Library Services and Technology Act state grant. In conjunction with the Department of Higher Education, the State Library also administers researchitct.org — Connecticut’s source for free online resources.

The Division of Library Development (DLD) provides leadership, funding, education, and statewide services that enhance a local library's ability to deliver high-quality library service to their community. Direct target audience are librarians representing public, academic, school and special libraries and indirect target audience are all Connecticut state residents.