† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · 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
GroupMarengoIllinoisUnited States
German30.7%16.1%12.5%
Irish18.1%10.6%9.4%
Polish12.4%6.0%2.2%
Italian10.8%5.4%4.8%
English9.4%6.9%9.5%
Swedish3.8%1.5%—
American3.2%3.3%5.3%
French2.0%0.7%1.6%
Mexican8.8%14.4%11.3%
Puerto Rican0.9%1.7%1.8%
Cuban0.2%0.2%0.7%
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
Marengo
Illinois
United States
Median age
31.9
39.1
39.1
Age 18–24
11.3%
9.1%
9.2%
Age 65 and older
17.1%
16.9%
17.2%
Household economy
Measure
Marengo
Illinois
United States
Median household income
$73,523
$83,390
$84,427
Poverty rate
15.7%
11.8%
12.5%
Bachelor's degree or higher (25+)
15.4%
37.9%
35.6%
Languages at home
Measure
Marengo
Illinois
United States
Speaks a non-English language at home
11.8%
24.1%
22.3%
Spanish
8.9%
14.0%
13.6%
German or other West Germanic
1.5%
0.3%
0.5%
Religious landscape
Measure
Marengo
Illinois
United States
Catholic
—
24.2%
18.6%
Evangelical Protestant
—
11.7%
16.5%
Unclaimed / not counted
—
49.2%
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.
Marengo, Illinois
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−26.7%
2008
−0.3%
2012
−12.8%
2016
−18.6%
2020
−20.8%
2024
−20.8%
DemocraticRepublican
6 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. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
38.5%Harris1,370
59.3%Trump2,112
2.3%
R+20.8
±0.0
R+19.4
3,563
R
38.3%Biden1,377
59.1%Trump2,126
2.6%
R+20.8
R+2.2
R+25.3
3,595
R
37.5%Clinton1,207
56.1%Trump1,805
6.3%
R+18.6
R+5.8
R+20.7
3,215
R
42.6%Obama1,303
55.3%Romney1,694
2.1%
R+12.8
R+12.5
R+16.6
3,062
R
48.8%Obama1,588
49.2%McCain1,598
2.0%
R+0.3
D+26.4
R+7.6
3,251
R
36.6%Kerry1,095
63.3%Bush1,894
0.2%
R+26.7
—
R+24.2
2,994
Marengo sits at the outer edge of Chicago's metropolitan sprawl, drawing new residents while retaining the agricultural character that has long defined its voting patterns and local economy.
Across the recorded series it reached a Republican high of 26.7 points in 2004. The 2024 margin was 20.8 points.
A population of 7,040, a 85% non-Hispanic-white share, and a median household income of $73,523 describe the city. The city's voting pattern over the last decade is most similar to that of Elkhorn and Wilmington.
Akashic
Political twins — cities
The cities 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.
In 2024, Marengo, Illinois voted Republican by 20.8 points (R+20.8), carried by the Republican candidate. Out of 3,563 votes cast, 1,370 went Democratic and 2,112 went Republican.
How many people live in Marengo, Illinois?
Marengo, Illinois has a population of 7,040 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Marengo, Illinois?
Median household income in Marengo, Illinois is $73,523 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Marengo, Illinois?
Akashic tracks 6 presidential elections in Marengo, Illinois from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
