Standard City, IL has a population of 225 and is the 23,895th largest city in the United States. The population density is 354 per sq mi which is 53% higher than the Illinois average and 290% higher than the national average. The median age in Standard City is 35 which is approximately 5% lower than the Illinois average of 37. In Standard City, 61% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 86% of Standard City residents were born in Illinois, 14% were born out of state, 0% were born outside of the United States and 0% were foreign born.