Plainfield is a city located in Will County Illinois. Plainfield has a 2020 population of 82,233. Plainfield is currently declining at a rate of -0.00% annually but its population has increased by 2.17% since the most recent census, which recorded a population of 80,484 in 2010. Plainfield reached it's highest population of 82,239 in 2018.
The average household income in Plainfield is $108,288 with a poverty rate of 3.97%. The median rental costs in recent years comes to $1,649 per month, and the median house value is $223,400. The median age in Plainfield is 34.5 years, 34 years for males, and 35.2 years for females.