[6] A post office called Crystal City has been in operation since 1872.

Currently, the PPG plant property remains empty and undeveloped.

It was purchased by Wings Enterprises in the mid-2000s with the intentions of constructing an iron ore smelter on the property.

In the early 2000s, the state of Missouri forced Doe Run Company to purchase 160 homes in Herculaneum after it was found over 56% of children within a quarter-mile (0.4 km) of the plant had high levels of lead in their blood.

[8] This prompted greater concern when Crystal City engaged in discussions over building a $1 billion dollar iron-ore smelter on the lands of the abandoned factory.

[10] As of the census[12] of 2010, there were 4,855 people, 1,894 households, and 1,228 families living in the city.

29.4% of all households were made up of individuals, and 12.3% had someone living alone who was 65 years of age or older.

28.2% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older.