state house districtIllinois 21st State House District
presidential margin
2004–2024 · Democratic minus Republican
2004D+23.7
2008D+37.9
2012D+37.2
2016D+42.1
2020D+39.5
2024D+26.4
net swing · 2004→2024D+2.8D+23.7 → D+26.4
vs. U.S. · 2024D+27.9D+26.4 vs R+1.5
presidential returns
2024 turnout 52.8% of 68,551 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
22,642
13,063
516
36,221
68,551
52.8%
2020
27,763
11,851
692
40,306
67,789†
59.5%
2016
25,168
9,630
2,134
36,932
67,032†
55.1%
2012
21,637
9,772
487
31,896
65,201†
48.9%
2008
23,333
10,358
518
34,209
65,200†
52.5%
2004
20,604
12,699
65
33,368
65,198†
51.2%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. 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
GroupIL HD 21IllinoisUnited States
Mexican41.7%14.4%11.3%
Puerto Rican5.6%1.7%1.8%
Ecuadorian1.2%0.3%—
Guatemalan1.0%0.3%0.5%
Colombian0.8%0.3%0.4%
Cuban0.6%0.2%0.7%
Venezuelan0.6%——
Honduran0.4%0.2%0.3%
German9.6%16.1%12.5%
Irish9.0%10.6%9.4%
Polish7.5%6.0%2.2%
Italian5.1%5.4%4.8%
English3.8%6.9%9.5%
American2.3%3.3%5.3%
Swedish1.3%1.5%—
Russian1.1%——
African American†6.1%12.1%9.9%
African0.2%0.5%0.5%
Nigerian0.2%0.3%0.2%
Asian Indian0.7%2.1%1.4%
Chinese0.4%1.0%1.3%
Filipino0.4%1.0%0.9%
Korean0.2%0.4%0.4%
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
IL HD 21
Illinois
United States
Median age
39.1
39.1
39.1
Age 18–24
8.7%
9.1%
9.2%
Age 65 and older
16.0%
16.9%
17.2%
Household economy
Measure
IL HD 21
Illinois
United States
Median household income
$79,675
$83,390
$84,427
Poverty rate
10.6%
11.8%
12.5%
Bachelor's degree or higher (25+)
42.7%
37.9%
35.6%
Languages at home
Measure
IL HD 21
Illinois
United States
Speaks a non-English language at home
35.8%
24.1%
22.3%
Spanish
21.1%
14.0%
13.6%
Russian, Polish, or other Slavic
4.2%
2.5%
0.7%
Other Indo-European
3.4%
2.6%
2.0%
Chinese (incl. Mandarin & Cantonese)
1.4%
0.9%
1.1%
Religious landscape
Measure
IL HD 21
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.
Illinois 21st State House District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+23.7%
2008
+37.9%
2012
+37.2%
2016
+42.1%
2020
+39.5%
2024
+26.4%
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
62.5%Harris22,642
36.1%Trump13,063
1.4%
D+26.4
R+13.0
D+27.9
36,221
D
68.9%Biden27,763
29.4%Trump11,851
1.7%
D+39.5
R+2.6
D+35.0
40,306
D
68.1%Clinton25,168
26.1%Trump9,630
5.8%
D+42.1
D+4.9
D+40.0
36,932
D
67.8%Obama21,637
30.6%Romney9,772
1.5%
D+37.2
R+0.7
D+33.3
31,896
D
68.2%Obama23,333
30.3%McCain10,358
1.5%
D+37.9
D+14.2
D+30.7
34,209
D
61.7%Kerry20,604
38.1%Bush12,699
0.2%
D+23.7
—
D+26.1
33,368
current representation
Current officeholders
DAbdelnasser RashidState House · 21
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+46.6, this downstate district sits among the most reliably Republican constituencies in Illinois, reflecting the deep partisan divide between rural southern Illinois and the Chicago metropolitan area.
Across the recorded series it reached a Democratic high of 42.1 points in 2016. Between 2020 and 2024 the district moved 13.0 points toward the Republican candidate; the 2024 margin was 26.4 points.
A population of 108,781, a 34% non-Hispanic-white share, and a median household income of $79,675 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 2 and State House District 43.
Akashic
Political twins — state-house districts
The state-house districts 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.
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.
Illinois 21st State House District. Akashic. https://akashic.app/sld-lower/17021/. Accessed May 20, 2026. License: CC BY 4.0.
How did Illinois 21st State House District vote in 2024?
In 2024, Illinois 21st State House District voted Democratic by 26.4 points (D+26.4), carried by the Democratic candidate. Out of 36,221 votes cast, 22,642 went Democratic and 13,063 went Republican.
How many people live in Illinois 21st State House District?
Illinois 21st State House District has a population of 108,781 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Illinois 21st State House District?
Median household income in Illinois 21st State House District is $79,675 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Illinois 21st State House District?
Akashic tracks 6 presidential elections in Illinois 21st State House District from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
