Northfield is a city located in Illinois. Northfield has a 2020 population of 86,338. Northfield is currently declining at a rate of -0.14% annually but its population has increased by 1.37% since the most recent census, which recorded a population of 85,173 in 2010. Northfield reached it's highest population of 87,880 in 2015.
The average household income in Northfield is $167,014 with a poverty rate of 5.50%. The median rental costs in recent years comes to $1,569 per month, and the median house value is $522,400. The median age in Northfield is 47.2 years, 45.9 years for males, and 48.6 years for females.