1 Ideal Gas Law - In perfect or ideal gas the change in density is directly related to the change of temperature and pressure as expressed by the Ideal Gas Law.  Water and Liquids - Critical Pressure Ratios - Critical pressure ratios for water and other liquids.
The 2016 Winfield, Illinois, population is 9,657. There are 3,228 people per square mile (population density).
You are here: Demographics. Demographics. Population. The Village of Winfield, incorporated in 1921, is located in west central DuPage County, which is ranked as one of the top growth areas in the Chicago metropolitan area, approximately 28 miles west of downtown Chicago. The Village's current population is 9,080 according to the 2010 census. Government.