Coatsburg, IL has a population of 155 and is the 25,522nd largest city in the United States. The population density is 1,264 per sq mi which is 468% higher than the Illinois average and 1295% higher than the national average. The median age in Coatsburg is 30 which is approximately 19% lower than the Illinois average of 37. In Coatsburg, 66% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 86% of Coatsburg residents were born in Illinois, 14% were born out of state, 0% were born outside of the United States and 0% were foreign born.