Convenience stores in Mason City, Illinois The most complete information about Convenience stores in Mason City, Illinois: Addresses, phone numbers, reviews and other information. All stores Convenience Electronics Furniture Home goods All convenience stores in Mason City Casey's General Store Convenience Closed now 224 East Chestnut Street, Mason City, IL 62664 Get Directions Contacts Write a review Mason City Cenex Convenience Open now Until 11:00 pm 152 West Chestnut Street, Mason City, IL 62664 Get Directions Contacts Write a review ✗ Facebook Google Plus Twitter