City of Coralville online utility payment service at www.coralville.org is temporarily unavailable. We apologize for the inconvenience. Utility payments may be dropped off at the 24-hour drop box at City Hall; mailed to PO Box 5127, Coralville, Iowa, 52241; or made in person at City Hall during normal business hours, Monday through Friday, 8:00 am to 5:00 pm. Contact Utility Billing at 319.248.1715 for more information.