Lake Tekakwitha is a village in Jefferson County, Missouri, United States. As of the 2020 census, Lake Tekakwitha had a population of 230.
According to the United States Census Bureau, the village has a total area of , of which are land and are water.
As of the census of 2010, there were 254 people, 115 households, and 60 families residing in the village. The population density was There were 136 housing units at an average density of . The racial makeup of the village was 97.2% White, 0.0% Native American, 1.2% Asian, and 1.6% from two or more races. Hispanic or Latino of any race were 0.4% of the population.
It is in the Meramec Valley School District.