Weichert, Realtors® - Thousand Islands Realty is a boutique real estate office. We service all of Jefferson County and southern St. Lawrence County. If you are interested in buying or selling real estate in Jefferson County or the Thousand Islands Region we can assist. We cover Lake Ontario from Henderson to Cape Vincent and we cover the St. Lawrence River from Cape Vincent to Morristown. We now have a second office at 22103 Fabco Road, Watertown.