Inverness, IL has a population of 7,844 and is the 4,773rd largest city in the United States. The population density is 1,200 per sq mi which is 440% higher than the Illinois average and 1225% higher than the national average. The median age in Inverness is 49 which is approximately 30% higher than the Illinois average of 37. In Inverness, 75% of the population over 15 years of age are married, 76% speak English and 2% speak Spanish. 60% of Inverness residents were born in Illinois, 22% were born out of state, 0% were born outside of the United States and 17% were foreign born.