Lincolnshire, IL has a population of 7,291 and is the 5,033rd largest city in the United States. The population density is 1,583 per sq mi which is 612% higher than the Illinois average and 1647% higher than the national average. The median age in Lincolnshire is 52 which is approximately 40% higher than the Illinois average of 37. In Lincolnshire, 73% of the population over 15 years of age are married, 82% speak English and 2% speak Spanish. 53% of Lincolnshire residents were born in Illinois, 30% were born out of state, 2% were born outside of the United States and 15% were foreign born.