The Ontario City Library, located in San Bernardino County, serves a community of 166,000 residents in the city of Ontario. With a legacy spanning 100 years, the library system includes the Ovitt Family Community Library and Lewis Family Branches. Together, these branches house a collection of 315,000 volumes and circulate 628,239 items annually. Their offerings include books, magazines, DVDs, audiobooks, and a collection dedicated to local history. Additionally, the library features a Makerspace equipped with tools such as a 3D printer, laser cutter, sewing machine, and robotics.