† 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
GroupMonticelloIllinoisUnited States
German23.4%16.1%12.5%
English17.2%6.9%9.5%
Irish13.8%10.6%9.4%
American5.9%3.3%5.3%
Scottish2.3%—1.3%
Scotch-Irish1.7%——
Italian1.6%5.4%4.8%
Swedish1.6%1.5%—
African American†2.7%12.1%9.9%
Mexican0.9%14.4%11.3%
Spaniard0.6%——
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
Monticello
Illinois
United States
Median age
43.8
39.1
39.1
Age 18–24
5.4%
9.1%
9.2%
Age 65 and older
21.9%
16.9%
17.2%
Household economy
Measure
Monticello
Illinois
United States
Median household income
$99,449
$83,390
$84,427
Poverty rate
5.7%
11.8%
12.5%
Bachelor's degree or higher (25+)
40.7%
37.9%
35.6%
Languages at home
Measure
Monticello
Illinois
United States
Speaks a non-English language at home
2.7%
24.1%
22.3%
Spanish
1.7%
14.0%
13.6%
Religious landscape
Measure
Monticello
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.
Monticello, Illinois
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−25.6%
2008
−10.7%
2012
−23.7%
2016
−22.8%
2020
−15.1%
2024
−16.2%
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
40.5%Harris1,401
56.7%Trump1,963
2.9%
R+16.2
R+1.1
R+14.8
3,463
R
40.9%Biden1,461
56.0%Trump2,002
3.1%
R+15.1
D+7.7
R+19.6
3,575
R
33.7%Clinton1,126
56.5%Trump1,888
9.8%
R+22.8
D+0.9
R+24.9
3,342
R
36.8%Obama1,200
60.5%Romney1,972
2.7%
R+23.7
R+13.0
R+27.5
3,261
R
43.9%Obama1,423
54.5%McCain1,769
1.6%
R+10.7
D+14.9
R+17.9
3,245
R
37.1%Kerry1,138
62.7%Bush1,923
0.3%
R+25.6
—
R+23.1
3,069
Monticello anchors Piatt County, a small agricultural county that has tilted Republican in recent statewide cycles by comfortable double-digit margins, reflecting the broader rural-to-exurban political realignment across central Illinois.
Across the recorded series it reached a Republican high of 25.6 points in 2004. Between 2020 and 2024 the city moved 1.1 points toward the Republican candidate; the 2024 margin was 16.2 points.
A population of 6,304, a 95% non-Hispanic-white share, and a median household income of $99,449 describe the city. The city's voting pattern over the last decade is most similar to that of Highland and Battlefield.
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, Monticello, Illinois voted Republican by 16.2 points (R+16.2), carried by the Republican candidate. Out of 3,463 votes cast, 1,401 went Democratic and 1,963 went Republican.
How many people live in Monticello, Illinois?
Monticello, Illinois has a population of 6,304 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Monticello, Illinois?
Median household income in Monticello, Illinois is $99,449 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Monticello, Illinois?
Akashic tracks 6 presidential elections in Monticello, Illinois from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
