The East Central Regional Library serves 179,000 Isanti County residents in the city of Cambridge. It comprises 14 library branches located in Aitkin, Cambridge, Chisago Lakes, Hinckley, McGregor, Milaca, Mille Lacs, Mora, North Branch, Pine City, Princeton, Rush City, Sandstone, and Wyoming. The library maintains 347,000 volumes and circulates 820,140 items per year. The collections include books, audiobooks, magazines, board games, and kits. It provides access to meeting spaces, computer resources, test proctoring services, printing/copying/faxing, interlibrary loans, and other library events.