HarrisDemocratic61.2%2,458,874TrumpRepublican36.6%1,468,637OtherAll other candidates2.2%90,278
D+24.6- Lead
- 990,237
- Total
- 4,017,789
- vs nation
- D+26.1
Akashicmetro area
Chicago-Naperville-Elgin, IL-IN
Office (updates table and map)
President margin by year
Place winner margin
13 counties by 2024 margin · County returns · MIT Election Lab
President results by year
Vote totals, margins, and source status
BidenDemocratic65.2%2,840,822TrumpRepublican32.8%1,430,638OtherAll other candidates2.0%87,583
D+32.4- Lead
- 1,410,184
- Total
- 4,359,043
- vs nation
- D+27.9
ClintonDemocratic63.7%2,536,633TrumpRepublican30.2%1,201,784OtherAll other candidates6.1%244,906
D+33.5- Lead
- 1,334,849
- Total
- 3,983,323
- vs nation
- D+31.4
ObamaDemocratic63.9%2,364,274RomneyRepublican34.5%1,277,661OtherAll other candidates1.6%59,599
D+29.4- Lead
- 1,086,613
- Total
- 3,701,534
- vs nation
- D+25.5
ObamaDemocratic67.4%2,622,151McCainRepublican31.5%1,224,214OtherAll other candidates1.1%42,379
D+35.9- Lead
- 1,397,937
- Total
- 3,888,744
- vs nation
- D+28.7
KerryDemocratic60.1%2,185,552BushRepublican39.2%1,425,172OtherAll other candidates0.7%25,018
D+20.9- Lead
- 760,380
- Total
- 3,635,742
- vs nation
- D+23.4
GoreDemocratic59.1%1,912,353BushRepublican38.2%1,236,047OtherAll other candidates2.7%87,928
D+20.9- Lead
- 676,306
- Total
- 3,236,328
- vs nation
- D+20.4
ClintonDemocratic58.0%1,680,475DoleRepublican33.9%982,920OtherAll other candidates8.1%233,223
D+24.1- Lead
- 697,555
- Total
- 2,896,618
- vs nation
- D+15.6
Key facts
- 2024 presidential margin
- D+24.6MIT Election Lab
- Population
- 9,371,5952024 5-year
- Population density
- 1,354 / sq mi2024 5-year · TIGER/Line
- Land area
- 6,923 sq miTIGER/Line
- Median household income
- $91,9002024 5-year
- White (non-Hispanic)
- 49.3%2024 5-year
- Black
- 15.7%2024 5-year
- Hispanic / Latino
- 24.1%2024 5-year
- Peak Democratic margin
- D+35.9 in 2008MIT Election Lab
- Peak Republican margin
- R+51.1 in 1920MIT Election Lab
- Most similar
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD · twin score 94.4
presidential history
Party record book
Chicago-Naperville-Elgin, IL-IN · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Barack Obama2008
67.4%
2,622,151 votes · D+35.9
Runner-up · Joe Biden, 2020 · 65.2%
Republican
Warren G. Harding1920
72.3%
779,069 votes · R+51.1
Runner-up · Calvin Coolidge, 1924 · 63.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
2,840,822votes
65.2% of the vote · D+32.4
Runner-up · Barack Obama, 2008 · 2,622,151 votes
Republican
Richard Nixon1972
1,854,020votes
57.4% of the vote · R+15.3
Runner-up · Ronald Reagan, 1984 · 1,777,954 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Hillary Clinton2016
+31.4pts D vs U.S.
Place D+33.5 · U.S. D+2.1
Runner-up · Barack Obama, 2008 · +28.7 pts
Republican
Warren G. Harding1920
+24.9pts R vs U.S.
Place R+51.1 · U.S. R+26.2
Runner-up · Calvin Coolidge, 1924 · +18.8 pts
U.S. House elections · 3 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
On a multi-state Place, each row sums votes cast in the separate U.S. House races held inside the Place that year. It is a geographic vote total, not one contest or a seat tally.
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 4,447,201 |
| 2018 | 4,572,522 |
| 2020 | 4,647,922 |
| 2022 | 4,920,798 |
| 2024 | 4,791,348 |
domestic migration
Who moves in and out
Net domestic migration over time
−33,708 net domestic migration · 2025
20112025
Net −984,178 over 2011–2025 · gain loss
| Year | Net domestic migration |
|---|---|
| 2011 | −51,494 |
| 2012 | −49,292 |
| 2013 | −49,647 |
| 2014 | −64,707 |
| 2015 | −81,237 |
| 2016 | −85,479 |
| 2017 | −84,985 |
| 2018 | −83,629 |
| 2019 | −75,177 |
| 2021 | −92,952 |
| 2022 | −122,143 |
| 2023 | −67,022 |
| 2024 | −42,706 |
| 2025 | −33,708 |
Cook County's overwhelming Democratic margins routinely offset competitive results in the Indiana counties and outer Illinois suburbs that share this 13-county metro, making aggregate vote totals a misleading read on the region's internal diversity.
Across the recorded series it reached a Democratic high of 35.9 points in 2008 and a Republican high of 51.1 points in 1920. Between 2020 and 2024 the metro moved 7.7 points toward the Republican candidate; the 2024 margin was 24.6 points.
A population of 9,371,595, a 49% non-Hispanic-white share, and a median household income of $91,900 describe the metro. The metro's voting pattern over the last decade is most similar to that of Philadelphia-Camden-Wilmington, PA-NJ-DE-MD and New York-Newark-Jersey City, NY-NJ.
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD
94.4twin score
2016–2024 trajectorypopulation scale≠ Italian ancestry
New York-Newark-Jersey City, NY-NJ
94.0twin score
population scale2004–2020 trajectory≠ % Asian
Detroit-Warren-Dearborn, MI
93.0twin score
population scale2000–2008 trajectory≠ % Latino
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-Elgin, IL-IN, Illinois. Akashic. https://akashic.app/cbsa/16980/. Accessed May 20, 2026. License: CC BY 4.0.
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Frequently asked questions
How did Chicago-Naperville-Elgin, IL-IN, Illinois vote in 2024?
In 2024, Chicago-Naperville-Elgin, IL-IN, Illinois voted Democratic by 24.6 points (D+24.6), carried by the Democratic candidate. Out of 4,017,789 votes cast, 2,458,874 went Democratic and 1,468,637 went Republican.
When did Chicago-Naperville-Elgin, IL-IN, Illinois last vote Republican?
The most recent presidential election in which Chicago-Naperville-Elgin, IL-IN, Illinois voted Republican was 1988.
How many people live in Chicago-Naperville-Elgin, IL-IN, Illinois?
Chicago-Naperville-Elgin, IL-IN, Illinois has a population of 9,371,595 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Chicago-Naperville-Elgin, IL-IN, Illinois?
Median household income in Chicago-Naperville-Elgin, IL-IN, Illinois is $91,900 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Chicago-Naperville-Elgin, IL-IN, Illinois?
Akashic tracks 34 presidential elections in Chicago-Naperville-Elgin, IL-IN, Illinois from 1892 to 2024. Of those, 19 went Democratic and 14 went Republican.