East of Texas, NY 3 meets NY 104B near the Lake Ontario shoreline. Past NY 104B, NY 3 parallels both Interstate 81 (I-81) and US 11 as it heads along the shore of Lake Ontario. Near the Selkirk Shores State Park west of Pulaski, NY 3 intersects NY 13 adjacent to the mouth of the Salmon River. After crossing the Salmon River, NY 3 passes the Sandy Island Beach State Park before entering Jefferson County. At the county line, NY 3 becomes signed as an east–west highway once again. The route continues northward toward Ellisburg where it meets NY 193 at the entrance to Southwick Beach State Park northwest of the community. Past NY 193, NY 3 passes the lakeside at Westcott Beach State Park prior to entering the vicinity of Sackets Harbor. The route bypasses both Sackets Harbor and the Sackets Harbor Battlefield State Historic Site to the east before separating from Lake Ontario and proceeding eastward toward Watertown.