Arlington History and modern tradition come together to make the Arlington area one of Jacksonville’s truly unique communities. Located on the banks of the St. Johns River, Jacksonville University offers world-class postsecondary education on its lush, green Arlington campus. A lot of new development near the Atlantic Intracoastal Waterway in East Arlington is underway. Look for a number of waterfront mixed-use developments that feature retail shops, marinas and condominiums.