Lindenhurst is a village in Lake County, Illinois, United States. The population was 12,539 at the 2000 census, and estimated to be 14,403 as of 2005. Lindenhurst lies within Lake Villa Township.
Lindenhurst is located at 42°25′9″N 88°1′34″W / 42.41917°N 88.02611°W / 42.41917; -88.02611 (42.419270, -88.026189).
According to the United States Census Bureau, the village has a total area of 4.1 square miles (10.6 km²), of which, 3.7 square miles (9.6 km²) of it is land and 0.4 square miles (0.9 km²) of it (8.82%) is water.