Boone County, Illinois: Diversifying Metro county. In 2024, voted R+14%. Republican peak: R+81 in 1920.
Key facts
- 2024 presidential margin
- R+14MIT Election Lab
- Political typology
- Diversifying MetroAkashic typology
- Population
- 53,2302024 5-year
- Median household income
- $84,5712024 5-year
- White (non-Hispanic)
- 71.8%2024 5-year
- Black
- 3.0%2024 5-year
- Hispanic / Latino
- 25.6%2024 5-year
- Peak Democratic margin
- D+4 in 2008MIT Election Lab
- Peak Republican margin
- R+81 in 1920MIT Election Lab
- Most similar
- Stephenson County, IL · similarity 0.98
2024 results by precinct
2024 precinct map of Boone CountyPrecinct-level 2024 presidential results for Boone County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | −54.6% |
| 1896 | −63.8% |
| 1900 | −61.8% |
| 1904 | −76.3% |
| 1908 | −60.1% |
| 1912 | −22.3% |
| 1916 | −59.5% |
| 1920 | −81.2% |
| 1924 | −70.0% |
| 1928 | −62.3% |
| 1932 | −39.7% |
| 1936 | −37.3% |
| 1940 | −47.0% |
| 1944 | −46.6% |
| 1948 | −43.2% |
| 1952 | −48.6% |
| 1956 | −56.0% |
| 1960 | −43.1% |
| 1964 | −15.5% |
| 1968 | −32.9% |
| 1972 | −38.1% |
| 1976 | −18.2% |
| 1980 | −30.3% |
| 1984 | −33.8% |
| 1988 | −24.0% |
| 1992 | −3.5% |
| 1996 | −6.4% |
| 2000 | −13.8% |
| 2004 | −14.6% |
| 2008 | +4.2% |
| 2012 | −5.7% |
| 2016 | −14.3% |
| 2020 | −12.8% |
| 2024 | −14.5% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 10,159 | 13,673 | 24,256 | ||
| R | 10,542 | 13,883 | 26,158 | ||
| R | 8,986 | 12,282 | 23,001 | ||
| R | 9,883 | 11,096 | 21,441 | ||
| D | 11,333 | 10,403 | 22,157 | ||
| R | 8,286 | 11,132 | 19,541 | ||
| R | 6,481 | 8,617 | 15,523 | ||
| R | 5,345 | 6,181 | 13,009 | ||
| R | 5,114 | 5,589 | 13,627 | ||
| R | 4,234 | 6,923 | 11,222 | ||
| R | 3,717 | 7,536 | 11,306 | ||
| R | 3,175 | 6,697 | 11,614 | ||
| R | 4,458 | 6,470 | 11,082 | ||
| R | 3,131 | 7,003 | 10,165 | ||
| R | 2,801 | 5,936 | 9,533 | ||
| R | 3,694 | 5,053 | 8,747 | ||
| R | 2,605 | 6,552 | 9,162 | ||
| R | 1,890 | 6,706 | 8,602 | ||
| R | 2,287 | 6,628 | 8,932 | ||
| R | 1,941 | 4,916 | 6,882 | ||
| R | 2,074 | 5,708 | 7,800 | ||
| R | 2,277 | 6,330 | 8,632 | ||
| R | 2,383 | 5,375 | 8,022 | ||
| R | 2,239 | 5,244 | 7,575 | ||
| R | 1,371 | 5,965 | 7,369 | ||
| R | 348 | 4,872 | 6,464 | ||
| R | 496 | 5,386 | 6,025 | ||
| R | 1,211 | 5,181 | 6,673 | ||
| O | 540 | 1,361 | 3,682 | ||
| R | 587 | 2,805 | 3,688 | ||
| R | 302 | 3,036 | 3,585 | ||
| R | 704 | 3,159 | 3,971 | ||
| R | 657 | 3,111 | 3,846 | ||
| R | 518 | 1,994 | 2,701 | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
23.7%
Irish
12.6%
Italian
8.8%
English
8.3%
Polish
6.5%
American
2.8%
Scottish
1.5%
African American
2.4%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 39.7 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$84,571
Boone County ranks in the top 25% of US counties.
Boone County$84,571
Illinois$83,390
United States$80,734
Boone County ranks in the top 25% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
9.9%
Children face moderate poverty.
Children under 1815.6%
Working age (18–64)8.0%
Seniors (65+)9.8%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
79.4%
speak English only
Spanish17.7%
Other Indo-European2.0%
Other languages0.6%
Asian & Pacific Islander0.3%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 53.1% of residents not counted as adherents by any reporting body.
Boone County sits at the northern edge of the Chicago metro's exurban fringe, where a legacy of factory employment has gradually given way to commuter households. Its R+14.5 presidential margin in 2024 reflects a rural-leaning electorate despite modest population growth.
The Democratic margin here reached four points in 2008. Between 2020 and 2024 the county moved two points toward the Republican candidate; the 2024 margin was fourteen points.
A population of 53,230, a 72% non-Hispanic-white share, and a median household income of $84,571 describe the county. The county's voting pattern over the last decade is most similar to that of Stephenson County and Lee County.
Most similar counties
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.
Boone County, Illinois. Akashic. https://akashic.app/county/17007/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More diversifying metro counties
Frequently asked questions
How did Boone County, Illinois vote in 2024?
In 2024, Boone County, Illinois voted Republican by 14.5 points (R+14), carried by the Republican candidate. Out of 24,256 votes cast, 10,159 went Democratic and 13,673 went Republican.
What is Boone County, Illinois's political typology?
Akashic places Boone County, Illinois in the "Diversifying Metro" typology — Mid-size metropolitan counties growing more diverse and trending Democratic. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 1 times, Republican 32 times, and other 1 times.
When did Boone County, Illinois last vote Democratic?
The most recent presidential election in which Boone County, Illinois voted Democratic was 2008.
How many people live in Boone County, Illinois?
Boone County, Illinois has a population of 53,230 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boone County, Illinois?
Median household income in Boone County, Illinois is $84,571 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Boone County, Illinois?
Akashic tracks 38 presidential elections in Boone County, Illinois from 1876 to 2024. Of those, 1 went Democratic and 32 went Republican. The county's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.