Big Thicket Lake Estates is a census-designated place (CDP) in Polk and Liberty counties, Texas, United States. This was a new CDP for the 2010 census with a population of 742.
Big Thicket Lake Estates is located at 30°29′15″N 94°46′4″W / 30.4875°N 94.76778°W (30.487388, -94.767885). The CDP has a total area of 0.0 square miles (0 km2), all of it land. The CDP has a total area of 2.5 square miles (6.5 km2), of which, 2.3 square miles (6.0 km2) of it is land and 0.2 square miles (0.52 km2) is water.