DuPage County, Illinois

DuPage County: County in Illinois, United States


DuPage County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 916,924 and a population density of 1,052 people per km². After 10 years in 2020 county had an estimated population of 917,481 inhabitants. Its county seat is Wheaton. The county was created 185 years ago in 1839.

DuPage County locator map
Location of DuPage County on Illinois map.

Quick Facts about DuPage County

Population : 917,481 (2020)
Country : United States of America
State : Illinois (United States)
Area : 872 km2
Water as percent of area : 2.6%
Land as percent of area : 97.4%
Named for : DuPage River
Altitude : 751 feet / 229 meters
Capital : Wheaton
Establishment : February 02, 1839
Time Zone : America/Chicago
Local time : 10:49:57 (1st March 2024)
Density : 1,052 Pop. per km² as of 2020
Population growth : 0.06% (2010-2020)
Warrenvillegrove image
Warrenvillegrove image


DuPage County is located at 41°51'7"N 88°5'8"W (41.8519500, -88.0856700). It has 2 neighbors: Cook County and Will County.

DuPage County map

The largest city of DuPage County is Naperville with a population of 147,986. Other cities include, Wheaton population 52,451, Elmhurst population 46,532, Woodridge population 33,329 and West Chicago population 26,593. See all DuPage County cities & populated places.

DuPage County Populated Places (more)

Cities, towns, neighborhoods & other populated places in DuPage County.

City Name Population Title
Naperville 147,986 The second most populous city in Illinois.
Wheaton 52,451 The most populous city in DuPage County, Illinois.
Downers Grove 48,727 Village in Downers Grove, Lisle, and York Townships, DuPage County, Illinois, US
Elmhurst 46,532 A city in DuPage County, Illinois.
Lombard 43,961 Village in Illinois
Carol Stream 38,821 Town
Glendale Heights 33,351 Town
Woodridge 33,329 Suburb of Chicago in Illinois, USA
Glen Ellyn 27,402 Town in DuPage County, Illinois, USA
West Chicago 26,593 City in DuPage County, Illinois, United States
Westmont 24,266 City in DuPage County, Illinois, United States of America
Lisle 23,153 Town in Illinois
Roselle 22,550 Village in Ilinois, United States of America
Bloomingdale 21,723 Township in DuPage County, Illinois
Darien 21,531 Town in Connecticut
Villa Park 21,291 Human settlement in DuPage County, Illinois, United States of America

DuPage County has 2 neighbours.

  • Wheaton


The population of DuPage County increased by 0.06% in 10 years.

Year Population % Change Method
2010 916,924 - census
2011 924,831 0.85% estimation process
2012 928,666 0.41% estimation process
2013 932,231 0.38% estimation process
2014 933,425 0.13% estimation process
2015 933,609 0.02% estimation process
2016 931,256 -0.25% estimation process
2017 930,265 -0.11% estimation process
2018 927,247 -0.33% estimation process
2019 922,921 -0.47% estimation process
2020 917,481 -0.59% estimation process

Comitatul DuPage, Comte de DuPage, Comté de DuPage, Condado de DuPage, Condado han DuPage, Contea di DuPage, Djupazh, Du Page County, Du-Pejdzh, DuPage, DuPage Comitatus, DuPage County, DuPage Kun, DuPage Kūn, DuPage konderria, DuPage megye, Dupage County, Dupejdzh, Dyupaz srjan, Hrabstwo DuPage, Okrug Dupejdz, Quan DuPage, Quận DuPage, de~yupeji jun, du pei qi xian, dupe'ija ka'unti, mqatʿt dwbyj, shhrstan dwpyj aylynwy, Ду-Пейдж, Дупейдж, Дюпаж, Округ Дупејџ, Դյուպաժ շրջան, شهرستان دوپیج، ایلینوی, مقاطعة دوبيج, ڈوپیج کاؤنٹی, ڈوپیگ کاؤنٹی، الینوائے, ডুপেইজ কাউন্টি, デュページ郡, 杜佩奇縣

People born in DuPage County (5)

People born in DuPage County, including basketball player Lenae Williams, rower Peter Nordell, author Henry Augustine Smith, .


  • Kenneth A. Johnson (American sport shooter) he was born in 01/01/1969
  • Emma Graham Clock (American author and botanical artist) she was born in 24/10/1851

Illinois Other Counties (more counties)

County Name Population Title
Cook County 5,108,284 County in Illinois, United States
Chicago 2,677,643 The third most populous city in the United States and the center of the Chicago metropolitan area.
Lake County 693,593 County in Oregon, United States
Will County 688,726 County in Illinois, United States
Kane County 531,010 County in southern Utah, United States
McHenry County 305,888 County in Illinois, United States
Winnebago County 281,295 County in Illinois, United States
Madison County 262,635 County in Montana, United States
Saint Clair County 258,046 The County of St.
Champaign County 209,192 County in Illinois, United States
Aurora 196,383 The second most populous city in Illinois.
Sangamon County 193,882 County in Illinois, United States
Peoria County 177,652 County in Illinois, United States of America
McLean County 171,256 County in North Dakota, United States
Naperville 147,986 The second most populous city in Illinois.
Rockford 144,835 The second most populous city in Illinois.