† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
19 counties by 2024 margin · County returns · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupChicago-Naperville, IL-IN-WIUnited States
German13.3%12.5%
Irish10.2%9.4%
Polish7.8%2.2%
Italian6.1%4.8%
English5.1%9.5%
American2.5%5.3%
Swedish1.5%—
Russian0.7%—
Mexican17.9%11.3%
Puerto Rican2.2%1.8%
Guatemalan0.4%0.5%
Ecuadorian0.3%—
Colombian0.3%0.4%
Cuban0.3%0.7%
Venezuelan0.2%—
Honduran0.2%0.3%
African American†13.8%9.9%
African0.6%0.5%
Nigerian0.3%0.2%
Jamaican0.2%0.4%
Asian Indian2.5%1.4%
Chinese1.2%1.3%
Filipino1.2%0.9%
Korean0.5%0.4%
Pakistani0.4%—
Vietnamese0.2%0.6%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Chicago-Naperville, IL-IN-WI
United States
Median age
38.7
39.1
Age 18–24
8.9%
9.2%
Age 65 and older
16.2%
17.2%
Household economy
Measure
Chicago-Naperville, IL-IN-WI
United States
Median household income
$90,970
$84,427
Poverty rate
11.3%
12.5%
Bachelor's degree or higher (25+)
40.6%
35.6%
Languages at home
Measure
Chicago-Naperville, IL-IN-WI
United States
Speaks a non-English language at home
29.4%
22.3%
Spanish
17.5%
13.6%
Russian, Polish, or other Slavic
3.2%
0.7%
Other Indo-European
3.1%
2.0%
Other Asian & Pacific Island
1.1%
1.1%
Religious landscape
Measure
Chicago-Naperville, IL-IN-WI
United States
Catholic
28.2%
18.6%
Evangelical Protestant
8.3%
16.5%
Unclaimed / not counted
48.1%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Chicago-Naperville, IL-IN-WI
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
1892
+6.9%
1896
−20.5%
1900
−10.2%
1904
−35.2%
1908
−21.9%
1912
+11.0%
1916
−11.5%
1920
−51.2%
1924
−44.1%
1928
−10.6%
1932
+10.8%
1936
+22.8%
1940
+6.4%
1944
+10.1%
1948
+4.2%
1952
−5.9%
1956
−18.8%
1960
+6.6%
1964
+20.6%
1968
+1.3%
1972
−15.8%
1976
−0.1%
1980
−1.4%
1984
−9.0%
1988
−0.2%
1992
+16.4%
1996
+23.4%
2000
+19.8%
2004
+19.5%
2008
+34.6%
2012
+27.9%
2016
+31.1%
2020
+29.9%
2024
+22.3%
DemocraticRepublican
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
60.0%Harris2,567,289
37.7%Trump1,613,641
2.2%
D+22.3
R+7.6
D+23.8
4,275,432
D
64.0%Biden2,956,162
34.0%Trump1,572,656
2.0%
D+29.9
R+1.2
D+25.5
4,621,789
D
62.5%Clinton2,637,917
31.3%Trump1,323,365
6.2%
D+31.1
D+3.2
D+29.0
4,221,955
D
63.2%Obama2,487,609
35.2%Romney1,387,311
1.6%
D+27.9
R+6.7
D+24.1
3,939,000
D
66.8%Obama2,759,227
32.1%McCain1,327,429
1.1%
D+34.6
D+15.1
D+27.4
4,133,103
D
59.4%Kerry2,300,704
39.9%Bush1,543,960
0.7%
D+19.5
R+0.2
D+22.0
3,871,795
D
58.5%Gore2,016,464
38.7%Bush1,335,220
2.7%
D+19.8
R+3.7
D+19.3
3,445,976
D
57.5%Clinton1,775,857
34.1%Dole1,052,731
8.3%
D+23.4
D+7.0
D+14.9
3,086,281
D
49.9%Clinton1,823,341
33.5%Bush1,223,195
16.6%
D+16.4
D+16.7
D+10.9
3,653,003
R
49.5%Dukakis1,638,813
49.7%Bush1,646,823
0.8%
R+0.2
D+8.7
D+7.5
3,310,824
R
45.2%Mondale1,578,498
54.2%Reagan1,892,266
0.6%
R+9.0
R+7.6
D+9.2
3,490,999
R
44.9%Carter1,542,105
46.3%Reagan1,590,598
8.7%
R+1.4
R+1.3
D+8.3
3,432,996
R
49.0%Carter1,672,823
49.1%Ford1,676,834
1.9%
R+0.1
D+15.7
R+2.2
3,413,808
R
41.8%McGovern1,434,831
57.6%Nixon1,976,811
0.5%
R+15.8
R+17.1
D+7.4
3,430,045
D
46.1%Humphrey1,549,271
44.8%Nixon1,507,140
9.1%
D+1.3
R+19.3
D+2.0
3,360,782
D
60.3%Johnson2,062,905
39.7%Goldwater1,358,459
0.0%
D+20.6
D+14.0
R+2.0
3,422,593
D
53.2%Kennedy1,812,824
46.6%Nixon1,588,139
0.3%
D+6.6
D+25.4
D+6.4
3,409,764
R
40.5%Stevenson1,256,415
59.3%Eisenhower1,840,275
0.2%
R+18.8
R+12.9
R+3.4
3,104,418
R
46.9%Stevenson1,474,049
52.8%Eisenhower1,660,083
0.3%
R+5.9
R+10.1
D+4.8
3,143,027
D
51.7%Truman1,473,409
47.5%Dewey1,354,738
0.8%
D+4.2
R+6.0
R+0.3
2,851,404
D
54.9%Roosevelt1,544,004
44.7%Dewey1,259,332
0.4%
D+10.1
D+3.7
D+2.6
2,814,181
D
53.0%Roosevelt1,452,876
46.6%Willkie1,277,981
0.4%
D+6.4
R+16.4
R+3.6
2,742,182
D
60.0%Roosevelt1,541,528
37.2%Landon956,514
2.8%
D+22.8
D+11.9
R+1.5
2,571,267
D
53.8%Roosevelt1,171,664
43.0%Hoover935,854
3.2%
D+10.8
D+21.5
R+7.0
2,176,485
R
44.3%Smith887,046
54.9%Hoover1,099,696
0.8%
R+10.6
D+33.5
D+6.8
2,001,979
R
19.0%Davis275,867
63.1%Coolidge916,342
18.0%
R+44.1
D+7.1
R+18.9
1,453,156
R
21.1%Cox247,811
72.4%Harding848,259
6.5%
R+51.2
R+39.7
R+25.0
1,172,193
R
42.3%Wilson470,838
53.8%Hughes598,597
3.9%
R+11.5
R+22.5
R+14.6
1,113,406
O
30.3%Wilson178,269
19.3%Taft113,419
50.5%
Roosevelt +20.2
D+32.9
R+8.5
589,167
R
35.5%Bryan203,768
57.4%Taft329,320
7.2%
R+21.9
D+13.3
R+12.3
574,181
R
25.9%Parker138,739
61.1%Roosevelt327,416
13.1%
R+35.2
R+24.9
R+15.5
536,306
R
43.5%Bryan239,174
53.7%McKinley295,479
2.8%
R+10.2
D+10.3
R+2.7
549,831
R
38.9%Bryan203,295
59.4%McKinley310,396
1.6%
R+20.5
R+27.4
R+14.4
522,162
D
51.9%Cleveland197,502
45.0%Harrison171,100
3.1%
D+6.9
—
D+5.3
380,557
domestic migration
Who moves in and out
Net domestic migration over time
−33,614 net domestic migration · 2025
20112025
Net −1,006,611 over 2011–2025 · gain loss
Domestic migration in Chicago-Naperville, IL-IN-WI in Chicago-Naperville, IL-IN-WI: net domestic migration by year
Year
Net domestic migration
2011
−53,263
2012
−51,476
2013
−51,383
2014
−66,890
2015
−84,140
2016
−88,658
2017
−86,763
2018
−84,640
2019
−75,927
2021
−94,330
2022
−125,113
2023
−67,832
2024
−42,582
2025
−33,614
Chicago-Naperville, IL-IN-WI sits in the Upper Midwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 34.6 points in 2008 and a Republican high of 51.2 points in 1920. Between 2020 and 2024 the region moved 7.6 points toward the Republican candidate; the 2024 margin was 22.3 points.
A population of 9,905,766, a 51% non-Hispanic-white share, and a median household income of $90,970 describe the region. The region's voting pattern over the last decade is most similar to that of Philadelphia-Reading-Camden, PA-NJ-DE-MD and New York-Newark, NY-NJ-CT-PA.
Akashic
Political twins — combined metros
The combined metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Chicago-Naperville, IL-IN-WI, Illinois. Akashic. https://akashic.app/csa/176/. Accessed May 20, 2026. License: CC BY 4.0.
How did Chicago-Naperville, IL-IN-WI, Illinois vote in 2024?
In 2024, Chicago-Naperville, IL-IN-WI, Illinois voted Democratic by 22.3 points (D+22.3), carried by the Democratic candidate. Out of 4,275,432 votes cast, 2,567,289 went Democratic and 1,613,641 went Republican.
When did Chicago-Naperville, IL-IN-WI, Illinois last vote Republican?
The most recent presidential election in which Chicago-Naperville, IL-IN-WI, Illinois voted Republican was 1988.
How many people live in Chicago-Naperville, IL-IN-WI, Illinois?
Chicago-Naperville, IL-IN-WI, Illinois has a population of 9,905,766 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Chicago-Naperville, IL-IN-WI, Illinois?
Median household income in Chicago-Naperville, IL-IN-WI, Illinois is $90,970 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Chicago-Naperville, IL-IN-WI, Illinois?
Akashic tracks 34 presidential elections in Chicago-Naperville, IL-IN-WI, Illinois from 1892 to 2024. Of those, 18 went Democratic and 15 went Republican.
