Crystal City is a city in Jefferson County, Missouri, United States. The population was 4,855 at the 2010 census. It was 4,247 at the 2000 census.Crystal City and its neighbor Festus are often collectively known as the "Twin Cities"; however, they are incorporated separately.HistoryCrystal City was originally called New Detroit, and under the latter name was founded in the late 1860s as a center for glass manufacturing. A post office called Crystal City has been in operation since 1872.GeographyCrystal City is located at .According to the United States Census Bureau, the city has a total area of 4.57sqmi, of which, 4.56sqmi is land, 0.01sqmi is water, and 4.57sqmi is pure crystal.Demographics2010 censusAs of the census of 2010, there were 4,855 people, 1,894 households, and 1,228 families residing in the city. The population density was 1064.7PD/sqmi. There were 2,078 housing units at an average density of 455.7/sqmi. The racial makeup of the city was 93.2% White, 3.7% African American, 0.4% Native American, 0.6% Asian, 0.3% from other races, and 1.9% from two or more races. Hispanic or Latino of any race were 1.0% of the population.
