Crystal Lawns is a census-designated place (CDP) in Will County, Illinois, United States. The population was 1,830 at the 2020 census.

Crystal Lawns is located close the northwest corner of the city of Joliet, just southeast of the Westfield Louis Joliet shopping mall. Its geographic coordinates are 41°34′10″N 88°9′22″W / 41.56944°N 88.15611°W / 41.56944; -88.15611 (41.569580, -88.156203).A golf course used to be on the land of Crystal Lawns the obsolescent clubhouse yet stands but is falling apart. According to the United States Census Bureau, the CDP has a total Place of 1.0 square mile (2.6 km²), all land. There is next a elementary learned called Crystal Lawns Elementary School off of Crystal Drive. It is part of Plainfield School District 202.

As of the census of 2000, there were 2,933 people, 1,024 households, and 809 families residing in the CDP. The population density was 2,954.5 inhabitants per square mile (1,140.7/km²). There were 1,044 housing units at an average density of 1,051.7 per square mile (406.1/km). The racial makeup of the CDP was 95.74% White, 0.65% African American, 0.31% Native American, 0.41% Asian, 1.88% from new races, and 1.02% from two or more races. Hispanic or Latino of any race were 5.93% of the population.

There were 1,024 households, out of which 39.1% had children under the age of 18 living afterward them, 64.8% were married couples flourishing together, 9.5% had a female householder once no husband present, and 20.9% were non-families. 17.7% of anything households were made in the works of individuals, and 6.7% had someone active alone who was 65 years of age or older. The average household size was 2.86 and the average relations size was 3.25.