• county
  • FIPS 17043
  • Largest town: Naperville

DuPage County, Illinois

DuPage County had 937,142 residents in the Census Vintage 2024 estimate, on 327.9 square miles of land. It ranks 2nd of 102 in Illinois by population and 87th by land area.

Population
937,142
#2 of 102 in Illinois · #61 in US
Area
327.9 sq mi
#87 of 102 in Illinois · #2,746 in US
Density
2,858 / sq mi
#2 of 102 in Illinois · #44 in US
Median household income
$107,032
#3 of 102 in Illinois · #80 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

DuPage County within Illinois. Pin: Springfield.

Measure from here

Tools and pages that start from DuPage County

DuPage County population, land area and income

DuPage County had 937,142 residents in the Census Vintage 2024 estimate, on 327.9 square miles of land. It ranks 2nd of 102 in Illinois by population and 87th by land area. That works out to 2,858.4 people per square mile, 29.7 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Illinois has 24,447 residents, so DuPage County is 38.3 times that size.

Its SAIPE 2023 median household income of $107,032 is in the top tenth among 3,143 counties with an estimate.

National rank among 3,144

Population

937,142

3144th1st

61st of 3,144 (US)

Land area

328 sq mi

3144th1st

2746th of 3,144 (US)

Density

2,858.4 / sq mi

3144th1st

44th of 3,144 (US)

Median household income

$107,032

3143rd1st

80th of 3,143 (US)

Rank within Illinois (102)

Population

937,142

102nd1st

2nd of 102 (IL)

Land area

328 sq mi

102nd1st

87th of 102 (IL)

Density

2,858.4 / sq mi

102nd1st

2nd of 102 (IL)

Median household income

$107,032

102nd1st

3rd of 102 (IL)

How DuPage County's population changed since 2020

DuPage County gained 5,634 residents between the July 2020 and July 2024 estimates, a rise of 0.6%. That ranks 10th of 102 in Illinois for growth. The median Illinois county changed by -1.7%, and the state as a whole by -0.7%.

Since the April 2020 estimates base, DuPage County recorded 40,992 births and 30,248 deaths, a natural change of +10,744. Net international migration added +29,177 and net domestic migration, people moving to or from other US counties, came to -36,364. The largest single component was domestic migration, which removed 36,364 people.

931.5k2020927.1k2021925.1k2022929.2k2023937.1k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
40,992
Deaths
30,248
Net international migration
+29,177
Net domestic migration
-36,364
Change, July 2023 to July 2024
+7,962

Where DuPage County is

The Census internal point of DuPage County is at 41.852100, -88.086000. It sits in UTM zone 16N. The map shades Illinois's 102 county-equivalents by population change from 2020 to 2024, darker for faster growth, with DuPage County outlined. Dots are towns of 1,000+ people with residents in it.

Piatt County: -0.3%Hamilton County: -2.2%Williamson County: -0.1%Edgar County: -2.4%Macoupin County: -2.3%Marshall County: -1.3%Putnam County: +0.0%Richland County: -2.8%Washington County: -1.4%Lee County: -1.5%Douglas County: +0.2%Cook County: -1.6%Effingham County: -0.3%Edwards County: -3.6%Cass County: -2.0%Clay County: -3.4%Knox County: -2.2%LaSalle County: -0.9%Cumberland County: -1.3%Warren County: -3.7%Moultrie County: -0.9%Menard County: -2.5%Fayette County: -1.5%Boone County: -0.0%Lawrence County: -3.2%Marion County: -3.2%Champaign County: +3.0%Clark County: -2.4%Ford County: -0.4%Wayne County: -1.4%Logan County: -1.4%Grundy County: +2.5%Jasper County: -1.8%Crawford County: -1.3%McDonough County: -1.7%Clinton County: +0.5%Perry County: -3.0%Montgomery County: -2.2%Henry County: -2.0%Livingston County: -1.2%Scott County: -3.8%Alexander County: -11.2%Bureau County: -2.2%Brown County: +1.1%Mason County: -3.9%Calhoun County: -4.1%Greene County: -4.3%Coles County: -1.4%Kendall County: +8.2%Lake County: +0.7%Mercer County: -2.2%St. Clair County: -2.3%Wabash County: -3.0%Bond County: -1.7%DuPage County: +0.6%Gallatin County: -5.2%Stephenson County: -3.3%McHenry County: +1.9%White County: -3.0%Saline County: -3.9%Christian County: -2.2%Sangamon County: -1.0%Massac County: -3.6%Macon County: -2.9%Johnson County: -0.0%Jo Daviess County: -2.6%Peoria County: -1.0%DeKalb County: +1.0%Pope County: -1.5%De Witt County: -0.9%Schuyler County: -1.7%Fulton County: -3.1%Ogle County: -0.8%Jersey County: -1.6%Iroquois County: -3.3%Kankakee County: -0.9%Rock Island County: -1.1%Pulaski County: -5.8%Kane County: +0.9%Union County: -2.4%Whiteside County: -1.7%Woodford County: -0.3%Carroll County: -1.5%Adams County: -2.3%Hardin County: -2.6%Madison County: -1.0%Hancock County: -3.1%Monroe County: +0.0%Tazewell County: -1.1%Jackson County: -0.1%Vermilion County: -3.9%Randolph County: -0.6%McLean County: +0.5%Morgan County: -2.6%Shelby County: -1.7%Will County: +1.7%Winnebago County: -0.4%Jefferson County: -2.4%Stark County: -2.2%Henderson County: -4.5%Pike County: -2.6%Franklin County: -1.8%
Change 2020 to 2024
  1. < -3.0%
  2. < -2.2%
  3. < -1.4%
  4. < -0.3%
  5. ≥ -0.3%
no data

Orange pin: DuPage County internal point. Dark pin: Springfield.

Internal point

Decimal
41.852100, -88.086000
DMS
41°51'7.56"N 88°05'9.60"W
UTM
16N 409851.5E 4633925.3N
Geohash
dp3q5dcwp
Plus code
86HHVW27+RH

Towns in DuPage County

35 incorporated places of 1,000+ people have residents in DuPage County, 841,355 people together, or 90% of the county. Each figure counts only the part of the town inside DuPage County; towns marked "part" extend into another county. The largest is Naperville with 100,751.

  1. 01Naperville (part)100,751
  2. 02Wheaton53,741
  3. 03Aurora (part)52,486
  4. 04Downers Grove50,552
  5. 05Elmhurst (part)46,098
  6. 06Lombard44,490
  7. 07Carol Stream39,556
  8. 08Addison35,728
  9. 09Woodridge (part)34,078
  10. 10Glendale Heights32,866
  11. 11Glen Ellyn28,872
  12. 12West Chicago25,469
  13. 13Westmont24,308
  14. 14Bartlett (part)23,784
  15. 15Lisle23,548
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering DuPage County

The Census 2024 county adjacency file lists 4 neighbors for DuPage County. The most populous is Cook County, IL, with 5,182,617 residents. Distances run between Census internal points in a straight line.

Distance to Springfield and the nearest big city

Springfield is 164.8 miles SSW of DuPage County's internal point in a straight line. The nearest place of 100,000 or more is Naperville, IL (population 153,124), 8.1 miles away. The nearest place of 10,000 or more is Wheaton, IL (population 53,741), 1.2 miles away.

DuPage County FIPS code

The FIPS code of DuPage County is 17043: state code 17 for Illinois plus county code 043. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $107,032.

Questions people ask

What is the population of DuPage County, Illinois?

The Census Vintage 2024 estimate for July 1, 2024 is 937,142. That is up 5,634 people (0.6%) from the July 2020 estimate of 931,508.

What is the FIPS code of DuPage County?

17043. The first two digits (17) are Illinois; the last three (043) identify the county.

What is the largest town in DuPage County?

Naperville, with 100,751 residents inside DuPage County in 2024 (153,124 across all 2 counties it spans).

Which counties border DuPage County?

4 county-equivalents border it in the Census 2024 adjacency file: Cook County, IL; Will County, IL; Kane County, IL; Kendall County, IL.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.