DuPage County, Illinois

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DuPage County
County
County of DuPage
Warrenvillegrove.jpg
Restored tallgrass prairie in DuPage County, Illinois.jpg
Warrenville Grove Forest Preserve on the West Branch of the DuPage River, Restored tallgrass prairie
Official seal of DuPage County
Seal
Motto(s): 
The Magnificent Miles West of Chicago
Map of Illinois highlighting DuPage County
Location within the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
Coordinates: 41°50′N 88°05′W / 41.83°N 88.08°W / 41.83; -88.08
Country United States
State Illinois
FoundedFebruary 9, 1839
Named forDuPage River
SeatWheaton
Largest cityAurora (population)
Naperville (area)
Area
 • Total336 sq mi (870 km2)
 • Land327 sq mi (850 km2)
 • Water8.9 sq mi (23 km2)  2.6%
Population
 (2020)
 • Total932,877
 • Density2,800/sq mi (1,100/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Area code630 and 331
Congressional districts3rd, 5th, 6th, 8th, 11th, 14th
Websitewww.dupageco.org
[1]
DuPage County at the time of its creation in 1839

DuPage County (/ˌduːˈpeɪdʒ/) is a county in the U.S. state of Illinois, and one of the collar counties of the Chicago metropolitan area. As of the 2020 census, the population was 932,877, making it Illinois' second-most populous county. Its county seat is Wheaton.[2]

Known for its vast Tallgrass prairies, DuPage County has become mostly developed and suburbanized, although some pockets of farmland remain in the county's western and northern parts. Located in the Rust Belt, the area is one of few in the region whose economy quickly became dependant on the headquarters of several large corporations due to its close proximity to Chicago. As steel mills closed in the 1970s and 1980s, several acres that were formally industrialized areas were converted into business parks to meet the growing tax base. The county has a mixed socioeconomic profile and residents of Hinsdale, Naperville and Oak Brook include some of the wealthiest people in the Midwest. On the whole, the county enjoys above average median household income levels and low overall poverty levels when compared to the national average.[3] In 2018, Niche ranked two DuPage municipalities (Clarendon Hills #3 and Naperville #16) amongst the top 20 best places to live in America.[4]

History[]

DuPage County was formed on February 9, 1839 out of Cook County.[5] The county took its name from the DuPage River, which was, in turn, named after a French fur trapper, DuPage.[6] The first written history to address the name, the 1882 History of DuPage County, Illinois, by Rufus Blanchard, relates:[7]

The DuPage River had, from time immemorial, been a stream well known. It took its name from a French trader who settled on this stream below the fork previous to 1800. Hon. H. W. Blodgett, of Waukegan, informs the writer that J. B. Beaubien had often spoken to him of the old Frenchman, Du Page, whose station was on the bank of the river, down toward its mouth, and stated that the river took its name from him. The county name must have the same origin. Col Gurden S. Hubbard, who came into the country in 1818, informs the writer that the name DuPage, as applied to the river then, was universally known, but the trader for whom it was named lived there before his time. Mr. Beaubien says it is pronounced Du Pazhe (a having the sound of ah, and that the P should be a capital). This was in reply to Mr. Blodgett’s inquiry of him concerning the matter.

The first white settler in DuPage County was Bailey Hobson, who, with Lewis Stewart, built a house in 1831 for the Hobson family at a site about 2 miles south of present-day downtown Naperville.[8][9] Hobson later built a mill to serve surrounding farmers. Today, the Hobson house still stands on Hobson Road in Naperville, and the location of the mill is commemorated with a millstone and monument in today's Pioneer Park.[10]

Geography[]

According to the U.S. Census Bureau, the county has a total area of 336 square miles (870 km2), of which 327 square miles (850 km2) is land and 8.9 square miles (23 km2) (2.6%) is water.[11] The DuPage River and the Salt Creek flow through DuPage County. According to the Forest Preserve District of DuPage County, the highest point in the county is located at the Mallard Lake Landfill, which at its highest point is 982 feet (299 m) above mean sea level.[12]

Climate[]

Wheaton, Illinois
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
1.9
 
 
32
14
 
 
1.6
 
 
38
19
 
 
2.6
 
 
50
28
 
 
3.8
 
 
63
38
 
 
3.9
 
 
75
48
 
 
3.9
 
 
84
57
 
 
4
 
 
87
63
 
 
4.6
 
 
85
61
 
 
3.4
 
 
78
53
 
 
2.7
 
 
67
42
 
 
3.2
 
 
50
32
 
 
2.5
 
 
37
20
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[13]

In recent years, average temperatures in the county seat of Wheaton have ranged from a low of 14 °F (−10 °C) in January to a high of 87 °F (31 °C) in July, although a record low of −26 °F (−32 °C) was recorded in January 1985 and a record high of 105 °F (41 °C) was recorded in July 1995. Average monthly precipitation ranged from 1.56 inches (40 mm) in February to 4.60 inches (117 mm) in August.[13]

Adjacent counties[]

Counties that are adjacent to DuPage include:

  • Cook County (east and north)
  • Will County (south)
  • Kendall County (southwest; counties meet at a corner)
  • Kane County (west)

Major Highways[]

Demographics[]

Historical population
Census Pop. %±
18403,535—
18509,290162.8%
186014,70158.2%
187016,68513.5%
188019,16114.8%
189022,55117.7%
190028,19625.0%
191033,43218.6%
192042,12026.0%
193091,998118.4%
1940103,48012.5%
1950154,59949.4%
1960313,459102.8%
1970491,88256.9%
1980658,83533.9%
1990781,66618.6%
2000904,16115.7%
2010916,9241.4%
2020932,8771.7%
U.S. Decennial Census[14]
1790-1960[15] 1900-1990[16]
1990-2000[17] 2010-2019[18]

DuPage County's population's distribution by race and ethnicity in the 2010 census was as follows:[19]

Race / Ethnicity Percentage of
county population
White 77.9 %
Asian 10.1 %
Black or African American 4.6 %
American Indian and Alaska Native 0.3 %
Native Hawaiian and Other Pacific Islander 0.0 %
Two or more races 2.2 %
Hispanic or Latino 13.3 %
White, not Hispanic or Latino 70.5 %

DuPage County has become more diverse. The population of foreign-born residents increased from about 71,300 in 1990 to 171,000 by 2009 estimates.[20]

There were 325,601 households, out of which 37.00% had children under the age of 18 living with them, 60.90% were married couples living together, 7.90% had a female householder with no husband present and 28.00% were non-families. 22.90% of all households were made up of individuals, and 6.80% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.27.

In the county, the population was spread out, with 26.70% under the age of 18, 8.20% from 18 to 24, 32.40% from 25 to 44, 22.80% from 45 to 64 and 9.80% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 97.20 males. For every 100 females, age 18 and over, there were 94.20 males.

The median income for a household in the county was $98,441 and the median income for a family was $113,086.[21] Males had a median income of $60,909 versus $41,346 for females. The mean or average income for a family in DuPage County is $121,009, according to the 2005 census. The per capita income for the county was $38,458. About 2.40% of families and 3.60% of the population were below the poverty line, including 3.90% of those under age 18 and 4.30% of those age 65 or over.[21]

Religion[]

The First Church of Lombard is listed on the National Register of Historic Places.

DuPage County has several hundred Christian churches, and especially around Wheaton is a Bible Belt, with Wheaton College and various other evangelical Christian colleges, publishing houses, and Christianity Today in the area. Well-known churches include Community Christian Church of Naperville, College Church of Wheaton, Wheaton Bible Church, and First Baptist Church of Wheaton. There is also a large Catholic contingency, part of the Diocese of Joliet, and a Ukrainian Orthodox Church in Glendale Heights.

The Theosophical Society in America in Wheaton, the North American headquarters of the Theosophical Society Adyar, provides lectures and classes on theosophy, meditation, yoga, Eastern and New Age spirituality. Islamic mosques are located in Villa Park, Naperville (two mosques), Glendale Heights, Willowbrook, Westmont, Lombard, Bolingbrook, Addison, Woodale, West Chicago, and unincorporated Glen Ellyn.[22] There are Hindu temples in Bartlett, Bensenville, Bloomingdale, Carol Stream, Itasca and Medinah, and an Arya Samaj center in West Chicago. There is a Nichiren Shōshū Zen Buddhist temple in West Chicago[23] and a Theravada Buddhist Temple, called the Buddha-Dharma Meditation Center, in Willowbrook.[24] There is also a Reform synagogue, Congregation Etz Chaim, in Lombard and an unaffiliated one in Naperville.

Economy[]

DuPage County is the primary location of the Illinois Technology and Research Corridor. It is home to many large corporations, including:

Shopping malls in DuPage County include Oakbrook Center, which is the largest open-air mall in the nation, Westfield Fox Valley, Yorktown Center, Town Square Wheaton, and Stratford Square Mall. In addition, many of DuPage County's towns have prosperous and quaint downtown areas, especially in Naperville, Glen Ellyn, Elmhurst, Wheaton, Downers Grove and Hinsdale, which are mixed with boutiques, upscale chain stores and restaurants.

National Laboratories[]

Aerial view of the Tevatron particle accelerator at the Fermilab site.

Fermilab, which has the world's second-highest-energy particle accelerator,[25] is in Batavia, where it straddles the border between Kane and DuPage counties.[26] Argonne National Laboratory, one of the United States government's oldest and largest science and engineering research laboratories,[27] is in unincorporated, southeast DuPage County.[28] Both laboratories conduct tours of their facilities.

Arts and culture[]

Architecture[]

The 31-story Oakbrook Terrace Tower in Oakbrook Terrace, designed by Helmut Jahn, is the tallest building in Illinois outside of Chicago.[29] The Elmhurst Art Museum is housed in a Mies Van Der Rohe building. There is a Frank Lloyd Wright house in Elmhurst. Bochasanwasi Shri Akshar Purushottam Swaminarayan Sanstha, a conservative Hindu sect, has built BAPS Shri Swaminarayan Mandir Chicago, a large, intricately carved, marble temple in Bartlett. There are some Sears Catalog Homes in Downers Grove and Villa Park. The Byzantine-style clubhouse of the Medinah Country Club is also an architectural highlight of the county. Lombard is home to over thirty Lustron prefabricated steel homes.[30]

Museums and historical sites[]

See also: National Register of Historic Places listings in DuPage County, Illinois

Historical museums in DuPage County include:

Specialty museums in DuPage County include:

Joe Naper's General Store in Naperville

Historical sites include:

Music and theater[]

DuPage also plays host to a rich, local music scene. Some of the better-known bands to come out of the area include The Hush Sound, Lucky Boys Confusion, and Plain White T's.

Oakbrook Terrace's Drury Lane Theatre is an important live theatre in DuPage County. The Tivoli Theatre, one of the first theaters in the United States to be equipped with sound, is still in use in Downers Grove.[36] In addition to showing movies, the Tivoli is home to several local performing arts groups.[37]

Parks and recreation[]

Main article: Forest Preserve District of DuPage County
Morton Arboretum in Lisle

The Forest Preserve District of DuPage County owns and manages 25,000 acres (10,000 ha) of prairies, woodlands and wetlands. More than 4 million visitors each year enjoy 60 forest preserves, 145 miles of trails, and five education centers.[38]

Local urban parks include Lombard's Lilacia Park, Naperville's Centennial Beach, Woodridge's Cypress Cove Family Aquatic Park and Wheaton's Cosley Zoo. Privately funded attractions include Lisle's Morton Arboretum.

In the 1980s, DuPage County also had another major attraction, Ebenezer Floppen Slopper's Wonderful Water slides in Oakbrook Terrace, which today, stands abandoned and neglected.

The Illinois Prairie Path, a 61-mile (98 km) rail-to-trail multi-use path, runs through Cook, DuPage and Kane Counties. It intersects with the Great Western Trail at several points, as well as the Fox River Trail at a few points.

DuPage golf courses include: Wheaton's Chicago Golf Club, Arrowhead Golf Club and Cantigny Golf courses; the Medinah Country Club; the Village Links and Glen Oak Country Club of Glen Ellyn; Addison's Oak Meadows; Oak Brook's Oak Brook Golf Club, Butler National Golf Club, and Butterfield Country Club; Wood Dale's Maple Meadows; Westmont's Green Meadows; Lisle's River Bend (9 holes); West Chicago's St. Andrews Golf & Country Club and Winfield's Klein Creek Golf Club, among others.

Government and politics[]

Government[]

The powers of the County Board include managing county funds and business, levying taxes, and appropriating funds. The County Board exercises powers not assigned to other elected officials or other boards.[39]

The county is divided into six districts. Each district elects three members to the County Board in staggered two-year and four-year terms. The Chairman of the County Board is the chief executive officer of DuPage County, and is elected countywide every four years.

The County Board is controlled by the Democratic Party by an 11 to 7 margin.[40]

District Board Member Party
Chairman Daniel Cronin Republican
1 Ashley Selmon Democratic
1 Donald Puchalski Republican
1 Sam Tornatore Republican
2 Elizabeth Chaplin Democratic
2 Pete DiCianni Republican
2 Paula Deacon Garcia Democratic
3 Julie Renehan Democratic
3 Greg Hart Republican
3 Brian Krajewski Republican
4 Grant Eckhoff Republican
4 Mary FitzGerald Ozog Democratic
4 Lynn LaPlante Democratic
5 Amy Chavez Democratic
5 Sadia Covert Democratic
5 Dawn DeSart Democratic
6 Greg Schwarze Democratic
6 Sheila Rutledge Democratic
6 James Zay Republican

Politics[]

DuPage County was historically a stronghold of the Republican Party, and a classic bastion of suburban conservatism. In recent years, DuPage County has joined other suburban counties outside large U.S. cities trending Democratic in presidential election years since the 1990s. The county continues to lean Republican in state and local politics, however in the 2018 Illinois gubernatorial election, J. B. Pritzker became the first Democratic candidate for the governorship to win the county in more than 100 years.

National politics[]

United States presidential election results for DuPage County, Illinois[41]
Year Republican Democratic Third party
No.  % No.  % No.  %
2020 193,611 39.70% 281,222 57.66% 12,890 2.64%
2016 166,415 38.64% 228,622 53.08% 35,637 8.27%
2012 195,046 48.63% 199,460 49.73% 6,575 1.64%
2008 183,626 43.93% 228,698 54.72% 5,649 1.35%
2004 218,902 54.39% 180,097 44.75% 3,447 0.86%
2000 201,037 55.18% 152,550 41.87% 10,775 2.96%
1996 164,630 50.74% 129,709 39.97% 30,147 9.29%
1992 178,271 48.05% 114,564 30.88% 78,152 21.07%
1988 217,907 69.39% 94,285 30.02% 1,862 0.59%
1984 227,141 75.66% 71,430 23.79% 1,644 0.55%
1980 182,308 64.02% 68,991 24.23% 33,450 11.75%
1976 175,055 68.77% 72,137 28.34% 7,355 2.89%
1972 172,341 75.02% 57,043 24.83% 355 0.15%
1968 124,893 66.61% 48,492 25.86% 14,111 7.53%
1964 98,871 59.89% 66,229 40.11% 0 0.00%
1960 101,014 69.45% 44,263 30.43% 168 0.12%
1956 91,834 79.76% 23,103 20.06% 207 0.18%
1952 71,134 75.80% 22,489 23.97% 217 0.23%
1948 45,794 73.58% 15,528 24.95% 916 1.47%
1944 41,890 68.93% 18,711 30.79% 174 0.29%
1940 40,746 67.85% 18,923 31.51% 380 0.63%
1936 28,380 54.97% 21,684 42.00% 1,568 3.04%
1932 25,758 56.23% 18,547 40.49% 1,504 3.28%
1928 28,016 72.37% 10,479 27.07% 217 0.56%
1924 16,917 72.81% 1,893 8.15% 4,423 19.04%
1920 12,280 82.00% 2,084 13.92% 612 4.09%
1916 9,610 62.84% 4,816 31.49% 868 5.68%
1912 1,136 14.27% 2,236 28.09% 4,589 57.64%
1908 4,530 63.98% 1,975 27.90% 575 8.12%
1904 4,078 68.07% 1,407 23.49% 506 8.45%
1900 3,869 63.92% 1,947 32.17% 237 3.92%
1896 4,115 68.92% 1,588 26.60% 268 4.49%
1892 2,478 50.35% 2,154 43.76% 290 5.89%


The county supported Barack Obama, a Chicago resident, in 2008 and 2012 (albeit narrowly in 2012). Obama was the first Democratic presidential nominee to win the county since Franklin Pierce in 1852. The only time prior to 2008 that a Republican had failed to win the county was in 1912, when the GOP was mortally divided and former President and Progressive Party nominee Theodore Roosevelt won over half the county's vote.

DuPage County has historically been a fiscally and socially conservative Republican stronghold, though in recent years has become more politically liberal especially on issues of race and immigration.[42][43] DuPage County has been shifting more Democratic, with Joe Biden winning 58% of the vote in 2020. DuPage County has not voted for a Republican candidate for president since 2004. Donald Trump was the first Republican nominee for President since 1912 to get less than 40% of the DuPage County vote, both in the 2016 and 2020 general elections. Many DuPage County communities which normally vote Republican, including but not limited to Naperville, Lisle, Wheaton, Glen Ellyn, Carol Stream, Downers Grove, and Elmhurst did not support Donald Trump in 2016.[44] In December 2019, shortly after the U.S. House of Representatives voted to impeach Donald Trump, Carol Stream-based Christianity Today published a controversial editorial calling for the removal of Trump from office, citing the need to hold him to the same standards to which they held Bill Clinton in the 1990s (who was the last Democratic nominee for President to get less than 40% of the DuPage County vote).[45]

In the U.S. House of Representatives, DuPage County is in the 5th, 6th, 8th, 11th and 14th districts. In the 2018 general election, despite the county's historical Republican dominance, Democrats won every congressional district within the county.[46]

Local politics[]

Republicans historically controlled local politics in DuPage County from the nineteenth century until modern times. Democrats have only held countywide office twice. In 1934 William Robinson was elected Circuit Clerk and Arthur Hellyer was elected Treasurer. That year also saw the only Democratic majority county board in DuPage history.[47][48] Robinson and Hellyer each served one term; Robinson lost his bid for a full term in 1936 and Hellyer left the Treasurer's office to make a failed bid for probate judge in 1938.[49] In 2018, as part of a larger suburban realignment, Democratic candidate Jean Kaczmarek won the election for County Clerk and Daniel Hebreard won the President of the Forest Preserve District of DuPage County.[46][50][51]

During that same period Democrats were sporadically elected at the county board township levels. In 1972, Don Carroll was elected to the County Board. In the Democratic wave of 1974, Jane Spirgel, Mary Eleanor Wall, and Elaine Libovicz were elected. All four were from the northeastern portion of DuPage, which at that time was the most Democratic.[52] Republicans regained all seats on the board when Jane Spirgel ran for Illinois Secretary of State with Adlai Stevenson III under the Solidarity Party banner.[53] In 2000, Linda J. Bourke Hilbert was elected. Like her 1970s counterparts, she was from the northeastern portion of the county.[54] During the 2008 Democratic wave, three Democrats were elected to the board.[55] After the initial Obama wave, Republicans reasserted themselves on the board and by 2017 Democrats held only one of the eighteen board seats. In the 2018 general election, Democrats won seven seats as well as the offices of County Clerk and Forest Preserve District President.[46]

In 1973, a slate of Democrats took eight of nine offices in Addison Township. This feat would not be replicated until 2017 when Democratic candidates won a majority of offices in Naperville and Lisle townships.[56] Between these two victories, Democrats only held two township offices. Mark Starkovich served as York Township Supervisor from 1989-1993 and Martin McManamon has served as Wayne Township Highway Commissioner since 2013.[57][58]

In 2020, Democrats won control of the DuPage County Board, expanding on their 2018 lead.[59]

Education[]

Colleges and universities[]

Blanchard Hall at Wheaton College is listed on the National Register of Historic Places.

The College of DuPage, in Glen Ellyn, is one of the largest community colleges in the United States. Wheaton College is one of the most well-known and respected evangelical Christian colleges in the country. Benedictine University, Elmhurst University and North Central College also have long and respected histories in their communities.

Other prominent colleges and universities include: Midwestern University in Downers Grove; National University of Health Sciences and Northern Baptist Theological Seminary in Lombard; the Addison, Naperville and Oak Brook campuses of DeVry University; the Aurora campus of Robert Morris University; the Lisle campus of National–Louis University; the Naperville campus of Northern Illinois University; and the Wheaton campus of Illinois Institute of Technology.

Secondary schools[]

Dupage County is home to many academically and athletically successful public high schools, such as:

Additionally, DuPage County is home to several private high schools, including:

School districts[]

Main article: List of school districts in DuPage County, Illinois

The DuPage County Regional Office of Education provides regulatory and compliance oversight, quality services and support, and a variety of other services and information to the public schools within the forty-two school districts of the county that provide education to over 161,000 students in 245 schools.[61]

Infrastructure[]

Health care[]

DuPage hospitals include: Central DuPage Hospital in Winfield; Edward Hospital in Naperville; Elmhurst Memorial Hospital in Elmhurst; Adventist Hinsdale Hospital in Hinsdale; Advocate Good Samaritan Hospital in Downers Grove; Adventist GlenOaks Hospital in Glendale Heights; and Marianjoy Rehabilitation Hospital and Clinics in Wheaton.

Transportation[]

For a more comprehensive list, see List of County Highways in DuPage County, Illinois.

Aside from the part of O'Hare International Airport that is located inside the county, DuPage also has many railroads and several small airports, including DuPage Airport. DuPage is served by the Pace bus system.

DuPage County is served by four Interstate Highways, three US Highways, and nine Illinois Routes.

North–south roads (from west to east) include: IL 59 (Sutton Road), IL 53 (Rohlwing Road), I-355 (Veterans Memorial Tollway) and IL 83 (Kingery Highway). East–west roads (from south to north) include: I-55 (Stevenson Expressway) I-88 (Ronald Reagan Memorial Tollway), US 34 (Ogden Avenue), IL 56 (Butterfield Road), IL 38 (Roosevelt Road), IL 64 (North Avenue), Army Trail Road, US 20 (Lake Street), IL 19 (Irving Park Road) and IL 390 (Elgin–O'Hare Expressway), which begins at the Thorndale Avenue exit on I-290 and ends on Lake Street, in Hanover Park. I-294 partially enters DuPage County on its eastern border between Westchester, in Cook County, and Oak Brook, in DuPage County. Only the southbound lanes enter the county though.

DuPage County is also well-covered by Metra, the Chicago-area commuter rail system. Three of Metra's eleven lines pass through the county: Milwaukee District / West Line, Union Pacific / West Line, and BNSF. Nineteen Metra stations are within DuPage County.

Communities[]

Cities[]

  • Aurora (part)
  • Batavia (part)
  • Chicago (part)
  • Darien
  • Elmhurst (mostly)
  • Naperville (mostly)
  • Oakbrook Terrace
  • St. Charles (part)
  • Warrenville
  • West Chicago
  • Wheaton
  • Wood Dale

Villages[]

  • Addison
  • Bartlett (mostly)
  • Bensenville (mostly)
  • Bloomingdale
  • Bolingbrook (part)
  • Burr Ridge (part)
  • Carol Stream
  • Clarendon Hills
  • Downers Grove
  • Elk Grove Village (part)
  • Glendale Heights
  • Glen Ellyn
  • Hanover Park (Part)
  • Hinsdale (mostly)
  • Itasca
  • Lemont (part)
  • Lisle
  • Lombard
  • Oak Brook (mostly)
  • Roselle (mostly)
  • Schaumburg (part)
  • Villa Park
  • Wayne (part)
  • Westmont
  • Willowbrook
  • Willow Springs (part)
  • Winfield
  • Woodridge (mostly)

Unincorporated communities[]

Townships[]

DuPage County has nine townships, their populations at the 2010 census are:

Also a part of the independent City of Chicago, the southwest portion of O'Hare Airport lies within the northeast corner boundary of the county.

Ghost towns/Neighborhoods[]

See also[]

  • List of counties in Illinois
  • List of Illinois townships

References[]

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  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  3. ^ "DuPage County, IL". Data USA. Retrieved October 22, 2018.
  4. ^ "2018 Best Places to Live in America". Niche. Retrieved October 22, 2018.
  5. ^ White, Jesse (March 2010). "1837-1839 — Twenty-one New Counties" (PDF). Origin and Evolution of Illinois Counties. Illinois Secretary of State. p. 10. Archived (PDF) from the original on August 6, 2012. Retrieved September 26, 2012.
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  8. ^ Blanchard, Rufus (1882). History of Du Page County, Illinois. Chicago: O.L. Baskin & Co. Historical Publishers. pp. 26.
  9. ^ Richmond, C.W. (1877). History of Du Page County, Illinois. Aurora, Illinois: Knickerbocker & Hodder. pp. 11–12.
  10. ^ "Bailey Hobson: Naperville Heritage Society Stories". Naper Settlement. Archived from the original on May 8, 2018. Retrieved January 7, 2018.
  11. ^ "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Archived from the original on February 12, 2020. Retrieved July 11, 2015.
  12. ^ Forest Preserve District of DuPage County (2008). "Frequently Asked Questions about Environmental Services". Archived from the original on September 27, 2007. Retrieved January 9, 2008.
  13. ^ Jump up to: a b "Monthly Averages for Wheaton, Illinois". The Weather Channel. Archived from the original on 13 May 2011. Retrieved 27 January 2011.
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  15. ^ "Historical Census Browser". University of Virginia Library. Archived from the original on August 11, 2012. Retrieved July 4, 2014.
  16. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Archived from the original on April 24, 2014. Retrieved July 4, 2014.
  17. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Archived (PDF) from the original on December 18, 2014. Retrieved July 4, 2014.
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  21. ^ Jump up to: a b "American FactFinder". United States Census Bureau. Archived from the original on February 11, 2020. Retrieved April 2, 2009.
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  24. ^ "Archived copy". Archived from the original on December 5, 2006. Retrieved November 24, 2006.CS1 maint: archived copy as title (link)
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External links[]

Coordinates: 41°50′N 88°05′W / 41.833°N 88.083°W / 41.833; -88.083

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