Melcon Farms is a large-lot community in St. Johns, in northwestern St. Johns County between Jacksonville and St. Augustine, where the county turns rural west of the Julington Creek and St. Johns River lowlands. The area is known for spacious homesites rather than compact subdivision lots, with wooded acreage, scattered homes and a country road network feeding toward Greenbriar Road, State Road 13 and the Duval County line. Homes here are served by St. Johns County District Schools. Properties under the Melcon Farms name reach the market infrequently, and individual listings vary widely in acreage and improvements, so each should be read on its own terms. The setting remains distinctly low-density compared with the planned communities farther east in St. Johns County. View Melcon Farms homes currently for sale below.