Darien, Illinois

Darien
City
City of Darien
Rocky Glen Falls
Motto: 
"A Nice Place to Live"
Location of Darien in DuPage County, Illinois.
Coordinates: 41°44′44″N 87°58′52″W / 41.74556°N 87.98111°W / 41.74556; -87.98111
CountryUnited States
StateIllinois
CountyDuPage
TownshipDowners Grove
Incorporated1969
Government
  TypeCouncil–manager
  MayorJoseph Marchese
Area
  Total
6.28 sq mi (16.27 km2)
  Land6.17 sq mi (15.98 km2)
  Water0.11 sq mi (0.29 km2)  1.90%
Elevation
751 ft (229 m)
Population
 (2020)
  Total
22,011
  Density3,566.84/sq mi (1,377.25/km2)
Standard of living
  Per capita income$39,795 (median: $89,836)
  Home value$231,382 (median: $214,500 (2000))
ZIP code(s)
60561, 60596
Area code(s)630 and 331
Geocode17-18628
FIPS code17-18628
GNIS feature ID2393720
Websitewww.darien.il.us

Darien (formerly Cass) is a city in DuPage County, Illinois, United States. Per the 2020 census, the population was 22,011. A southwestern suburb of Chicago, Darien was named after the town of Darien, Connecticut. Darien is just north of I-55 and Historic U.S. Route 66 (now Frontage Road). The entire south edge of the town borders Waterfall Glen.