New York State Route 58 New York State Route 58 New York State Route 58 (NY 58) is a north–south state highway located in St. Lawrence County, New York, in the United States. The highway runs in a northwest to southeast direction as it traverses the county. The southern terminus of the route is at a junction with NY 3 in the hamlet of Fine within the town of the same name. Its northern terminus is at an intersection with NY 37 near the St. Lawrence River in the village of Morristown. Part of NY 58 passes through the Adirondack Mountains. NY 58 begins at
St. Lawrence County, New York Trump carried the county by an eight-point margin. The following public use airports are located in the county: St. Lawrence County, New York St. Lawrence County is a county in the U.S. state of New York. As of the 2010 census, the population was 111,944. The county seat is Canton. The county is named for the Saint Lawrence River, which in turn was named for the Christian saint Lawrence of Rome, on whose Feast day the river was discovered by French explorer Jacques Cartier. St. Lawrence County comprises the Ogdensburg-Massena, NY Micropolitan Statistical Area. St. Lawrence County is New York's