The Oak Public Library has been in operation since 1888. It was a private subscription library until 1902 when Oak Park residents approved a tax so that the library can be funded. To date, the library has three locations in Oak Park. The South Branch library was opened in 1913 but was moved into a bigger facility in 1936 now called Maze Branch. The North Brach was opened 1939 but moved to its current location in 1940. The Oak Park Public Library is known for its wide collection of books and recognition of the arts and architecture.

The book collection of all the branches include fiction and nonfiction books, movies, CDs, audiobooks, magazines, newspaper, reference materials and local history materials. There is also a film showing of different selection of movies in every facility. An art gallery that exhibits the work of local artists every month is available in the Main Library. There are many events that the library hosts like book discussion, storytelling time for children, drop-in study sessions and the like.