Long Grove is a city located in Lake County Illinois. With a 2020 population of 7,827, it is the 262nd largest city in Illinois and the 3683rd largest city in the United States . Long Grove is currently declining at a rate of -0.50% annually and its population has decreased by -2.69% since the most recent census, which recorded a population of 8,043 in 2010. Long Grove reached it's highest population of 8,039 in 2014. Spanning over 13 miles, Long Grove has a population density of 634 people per square mile.
The average household income in Long Grove is $276,430 with a poverty rate of 2.30%. The median rental costs in recent years comes to $3,250 per month, and the median house value is $648,700. The median age in Long Grove is 46.6 years, 46.2 years for males, and 46.7 years for females.