Standard City is a village in Macoupin County, Illinois, USA. The population was 138 at the 2000 census.
Standard City is located at 39°21′03″N 89°47′17″W.
According to the 2010 census, Standard City has a total area of 0.643 square miles (1.67 km2), of which 0.64 square miles (1.66 km2) (or 99.53%) is land and 0.003 square miles (0.01 km2) (or 0.47%) is water.
As of the census of 2000, there were 138 people, 58 households, and 41 families residing in the village. The population density was 216.7 people per square mile (83.3/km2). There were 61 housing units at an average density of 95.8 per square mile (36.8/km2). The racial makeup of the village was 99.28% White and 0.72% Asian.
There were 58 households out of which 32.8% had children under the age of 18 living with them, 55.2% were married couples living together, 8.6% had a female householder with no husband present, and 29.3% were non-families. 22.4% of all households were made up of individuals and 15.5% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.73.
In the village, the population was spread out with 22.5% under the age of 18, 13.8% from 18 to 24, 31.2% from 25 to 44, 22.5% from 45 to 64, and 10.1% who were 65 years of age or older. The median age was 35 years.