There are 3 real estate agents found in Merna, IL. View our Merna real estate area information to learn about the weather, local school districts, demographic data, and general information about Merna, IL. Get in touch with a Merna real estate agent who can help you find the home of your dreams in Merna. Use our mortgage calculator to see how much it would be to finance a home in Merna. Not ready to buy yet? Find and compare apartments for rent in Merna.