Columbia Public Library The Columbia Public Library is located at the northeast corner of the Locust Street Park in Columbia, a community located in the westernmost part of Lancaster County along the scenic Susquehanna River. Hours of Operation Monday: 10:00 AM - 8:00 PMTuesday: 10:00 AM - 8:00 PMWednesday: 10:00 AM - 8:00 PMThursday: 10:00 AM - 8:00 PMFriday: 10:00 AM - 5:00 PMSaturday: 9:00 AM - 4:00 PMSunday: Closed Library Information Address: 24 S. 6th Street Columbia, PA 17512 Phone number 717.684.2255 Visit Website Email address lgreybill@columbiapubliclibrary.org