Third Lake is located in Illinois. Third Lake, Illinois has a population of 1,239. Third Lake is more family-centric than the surrounding county with 38% households with children. The county percentage for households with children is 35%.
The median household income in Third Lake, Illinois is $122,985. The median household income for the surrounding county is $91,525 compared to the national median of $66,222. The median age of people living in Third Lake is 41.1 years.
The average high temperature in July is 82.2 degrees, with an average low temperature in January of 12.1 degrees. The annual precipitation is 35.04.