Gurnee is a city located in Lake County Illinois. With a 2020 population of 30,072, it is the 62nd largest city in Illinois and the 1285th largest city in the United States . Gurnee is currently declining at a rate of -0.51% annually and its population has decreased by -3.91% since the most recent census, which recorded a population of 31,295 in 2010. Gurnee reached it's highest population of 31,262 in 2010. Spanning over 14 miles, Gurnee has a population density of 2,227 people per square mile.
The average household income in Gurnee is $121,286 with a poverty rate of 5.43%. The median rental costs in recent years comes to $1,210 per month, and the median house value is $259,500. The median age in Gurnee is 40.3 years, 38.2 years for males, and 42.1 years for females.