Lakemoor is a village in Lake and McHenry counties in the U.S. state of Illinois. Per the 2020 census, the population was 6,182. Lakemoor is located at 42°20′25″N 88°12′11″W / 42.34028°N 88.20306°W. According to the 2010 census, Lakemoor has a total area of 5.253 square miles, of which 5.01 square miles is land and 0.243 square miles is water.