Runals Memorial Library opened its doors on September 8, 1924, and was open 3 afternoons per week. The library was located in a small room in the basement of the Runals Memorial Building and was made possible because of Sarah Runals and her love for books. In 1990, the library moved upstairs to a larger, more well-lit area. In May of 2007 the library moved into a newly constructed library building, shared with the City of Edgerton offices, and the library was renamed Edgerton Public Library.
Today Edgerton Public Library offers over 33,000 items for check-out including books, audiobooks, DVDs, iPads, WiFi hotspots, magazines, CDs, puzzles, games, toys, crafting supplies, cake pans and more. The library is open 6 days per week, and offers wireless connectivity 24 hours per day, 7 days per week. In addition, the library offers public computers and provides services for printing, scanning, copying, and laminating. Families can utilize the large play area with toys for children, and comfortable sitting spots for adults. There is Story Time every Thursday morning at 10 am, a Winter Reading Program for adults, and a Summer Reading Program for children, as well as various programs throughout the year.