You may be subject to a limit on some of your itemized deductions if your adjusted gross income is more than $254,200 ($279,650 if head of household, $305,050 if married filing jointly or qualifying widow(er), $152,525 if married filing separately).
Darien, IL City Data - Population, Homes, Statistics. Darien, IL City Data. Darien, IL is a city with great restaurants, attractions, history and people. There are around 22,860 people who live in Darien and approximately 904,161 who live in DuPage County.
Most / Least Educated Cities in IL. As of 2010-2014, the total population of Darien is 22,251, which is 2.66% less than it was in 2000. The population growth rate is much lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%.