Lake Ronkonkoma is a census-designated place (CDP) in Suffolk County, on Long Island in New York, United States. Most of Lake Ronkonkoma is located in the Town of Brookhaven, but small sections are in the Town of Smithtown and the Town of Islip as well. It is the largest lake on Long Island, Lake Ronkonkoma, which is adjacent to the CDP. Around the lake, there is a portion of land that is under Islip’s jurisdiction.
Lake Ronkonkoma has a total area of 4.9 square miles (13 km2), no area of water. It borders Hauppauge, Nesconset, Lake Grove, Centereach, Holbrook, Ronkonkoma, and Islandia. Portion Road runs through the middle of the hamlet.
As a result of the lake’s presence, Lake Ronkonkoma was once a resort town. On the shores of the lake, you can still see remnants of old resorts and hotels. Brookhaven town beach and park on the eastern side of Lake Ronkonkoma were renamed in honour of Navy SEAL Lieutenant Michael P. Murphy. This is a fitting tribute because Lt. Murphy was the beach manager and head lifeguard at this park during high school and summer breaks from college.
Lake Ronkonkoma is home to many historical places and museums mostly surrounding or nearby the lake on Lake Shore Road including Princess Ronkonkoma, and Larry’s Landing. Parks and green spaces in the hamlet include Walter S. Commerdinger, Jr. County Park, Lake Ronkonkoma County Park, Lt. Michael P. Murphy Memorial Park, Raynor Beach County Park, Waltess Estates Park and 911 Responders Remembered Memorial Park. Lake Ronkonkoma Historical Society is located at 328 Hawkins Avenue.
Lake Ronkonkoma Coordinates: 40°49′47″N 73°6′47″W