Algonquin is a city located in Illinois. With a 2020 population of 30,928, it is the 61st largest city in Illinois and the 1256th largest city in the United States. Algonquin is currently growing at a rate of 0.03% annually and its population has increased by 2.94% since the most recent census, which recorded a population of 30,046 in 2010. Spanning over 13 miles, Algonquin has a population density of 2,514 people per square mile.
The average household income in Algonquin is $121,704 with a poverty rate of 3.20%. The median rental costs in recent years comes to $1,694 per month, and the median house value is $250,900. The median age in Algonquin is 41.2 years, 39.7 years for males, and 42.5 years for females. For every 100 females there are 95.3 males.