Third Lake, IL
Third Lake is a village in Lake County, Illinois, United States. The population was 1,355 at the 2000 census.
Third Lake is located at 42°22′5″N 88°0′32″W / 42.36806°N 88.00889°W / 42.36806; -88.00889 (42.368117, -88.008903).
According to the United States Census Bureau, the village has a total area of 0.8 square miles (2.1 km²), of which, 0.6 square miles (1.4 km²) of it is land and 0.2 square miles (0.6 km²) of it (31.25%) is water.