There are 10 real estate agents found in Deer River, NY. View our Deer River real estate area information to learn about the weather, local school districts, demographic data, and general information about Deer River, NY. Get in touch with a Deer River real estate agent who can help you find the home of your dreams in Deer River. Use our mortgage calculator to see how much it would be to finance a home in Deer River. Not ready to buy yet? Find and compare apartments for rent in Deer River.