Elmhurst Homes for Sale offers the best of western suburb of Chicago. Elmhurst is an affluent western suburb of Chicago and a city in DuPage and Cook counties in the U.S. state of Illinois. As of 2012 population estimates the city has a total population of 45,171. The city has a total area of 10.31 square miles, of which 10.25 square miles is land and 0.06 square miles is water according to 2010 census. According to a 2012 estimate the median income in the city for a household is $88,236 and for a family is $122,890. In this city the per capital income is $44,601 where 2.5% of the populations are below the poverty line.