† 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
GroupFlossmoorIllinoisUnited States
African American†55.3%12.1%9.9%
African1.7%0.5%0.5%
Nigerian1.4%0.3%0.2%
Jamaican0.6%—0.4%
German6.8%16.1%12.5%
Irish6.3%10.6%9.4%
Polish5.3%6.0%2.2%
Italian3.6%5.4%4.8%
English2.7%6.9%9.5%
American1.7%3.3%5.3%
Swedish0.9%1.5%—
Russian0.8%——
Mexican3.7%14.4%11.3%
Puerto Rican0.5%1.7%1.8%
Asian Indian0.5%2.1%1.4%
Chinese0.3%1.0%1.3%
Filipino0.3%1.0%0.9%
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
Flossmoor
Illinois
United States
Median age
47.6
39.1
39.1
Age 18–24
4.1%
9.1%
9.2%
Age 65 and older
20.0%
16.9%
17.2%
Household economy
Measure
Flossmoor
Illinois
United States
Median household income
$133,663
$83,390
$84,427
Poverty rate
5.5%
11.8%
12.5%
Bachelor's degree or higher (25+)
64.4%
37.9%
35.6%
Languages at home
Measure
Flossmoor
Illinois
United States
Speaks a non-English language at home
8.3%
24.1%
22.3%
Spanish
3.7%
14.0%
13.6%
Other Indo-European
1.3%
2.6%
2.0%
Other Asian & Pacific Island
1.3%
1.0%
1.1%
Other languages
1.2%
0.6%
0.8%
Religious landscape
Measure
Flossmoor
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.
Flossmoor, Illinois
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+36.9%
2008
+49.6%
2012
+49.4%
2016
+61.6%
2020
+68.5%
2024
+69.7%
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
D
84.4%Harris4,992
14.7%Trump871
0.9%
D+69.7
D+1.1
D+71.1
5,916
D
83.5%Biden5,254
15.0%Trump944
1.5%
D+68.5
D+6.9
D+64.1
6,291
D
78.6%Clinton4,557
17.0%Trump987
4.4%
D+61.6
D+12.2
D+59.5
5,798
D
73.9%Obama4,248
24.5%Romney1,409
1.5%
D+49.4
R+0.1
D+45.6
5,745
D
74.3%Obama4,209
24.7%McCain1,401
1.0%
D+49.6
D+12.7
D+42.3
5,666
D
68.4%Kerry3,718
31.6%Bush1,715
0.0%
D+36.9
—
D+39.3
5,434
Flossmoor is an affluent, majority-Black suburb in Cook County's south end whose college-educated electorate has tracked statewide Democratic margins while remaining sensitive to local municipal issues around schools and infrastructure.
Across the recorded series it reached a Democratic high of 69.7 points in 2024. Between 2020 and 2024 the city moved 1.1 points toward the Democratic candidate; the 2024 margin was 69.7 points.
A population of 9,391, a 27% non-Hispanic-white share, and a median household income of $133,663 describe the city. The city's voting pattern over the last decade is most similar to that of Garrison and Homewood.
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, Flossmoor, Illinois voted Democratic by 69.7 points (D+69.7), carried by the Democratic candidate. Out of 5,916 votes cast, 4,992 went Democratic and 871 went Republican.
How many people live in Flossmoor, Illinois?
Flossmoor, Illinois has a population of 9,391 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Flossmoor, Illinois?
Median household income in Flossmoor, Illinois is $133,663 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Flossmoor, Illinois?
Akashic tracks 6 presidential elections in Flossmoor, Illinois from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
