state senate districtMichigan 21st State Senate District
presidential margin
2004–2024 · Democratic minus Republican
2004D+5.6
2008D+22.2
2012D+17.8
2016D+11.1
2020D+15.7
2024D+12.5
net swing · 2004→2024D+6.9D+5.6 → D+12.5
vs. U.S. · 2024D+14.0D+12.5 vs R+1.5
presidential returns
2024 turnout 72.8% of 200,667 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
80,747
62,497
2,763
146,007
200,667
72.8%
2020
82,867
59,981
2,877
145,725
202,515†
72.0%
2016
66,132
52,097
8,022
126,251
197,385†
64.0%
2012
70,512
48,931
1,795
121,238
193,497†
62.7%
2008
80,268
50,657
2,367
133,292
191,921†
69.5%
2004
65,922
58,905
1,317
126,144
190,345†
66.3%
† 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
GroupMI SD 21MichiganUnited States
German19.5%17.7%12.5%
English13.6%10.5%9.5%
Irish11.4%9.9%9.4%
Polish4.7%7.2%2.2%
American3.6%4.2%5.3%
Italian3.4%4.2%4.8%
French2.5%3.0%1.6%
Dutch2.4%3.0%—
African American†11.1%12.2%9.9%
African0.5%0.5%0.5%
Haitian0.3%—0.3%
Mexican6.2%4.0%11.3%
Cuban0.6%0.2%0.7%
Puerto Rican0.6%0.5%1.8%
Asian Indian0.9%1.2%1.4%
Chinese0.6%0.5%1.3%
Vietnamese0.4%0.2%0.6%
Korean0.3%0.2%0.4%
Filipino0.2%0.2%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
MI SD 21
Michigan
United States
Median age
38.3
40.3
39.1
Age 18–24
14.1%
9.2%
9.2%
Age 65 and older
17.0%
18.5%
17.2%
Household economy
Measure
MI SD 21
Michigan
United States
Median household income
$69,787
$72,875
$84,427
Poverty rate
12.4%
13.2%
12.5%
Bachelor's degree or higher (25+)
36.9%
32.6%
35.6%
Languages at home
Measure
MI SD 21
Michigan
United States
Speaks a non-English language at home
10.6%
10.4%
22.3%
Spanish
3.1%
3.1%
13.6%
Other Indo-European
1.6%
1.8%
2.0%
Chinese (incl. Mandarin & Cantonese)
1.0%
0.5%
1.1%
Other Asian & Pacific Island
1.0%
0.8%
1.1%
Religious landscape
Measure
MI SD 21
Michigan
United States
Catholic
—
14.8%
18.6%
Evangelical Protestant
—
12.1%
16.5%
Unclaimed / not counted
—
60.3%
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.
Michigan 21st State Senate District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+5.6%
2008
+22.2%
2012
+17.8%
2016
+11.1%
2020
+15.7%
2024
+12.5%
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
55.3%Harris80,747
42.8%Trump62,497
1.9%
D+12.5
R+3.2
D+14.0
146,007
D
56.9%Biden82,867
41.2%Trump59,981
2.0%
D+15.7
D+4.6
D+11.3
145,725
D
52.4%Clinton66,132
41.3%Trump52,097
6.4%
D+11.1
R+6.7
D+9.0
126,251
D
58.2%Obama70,512
40.4%Romney48,931
1.5%
D+17.8
R+4.4
D+13.9
121,238
D
60.2%Obama80,268
38.0%McCain50,657
1.8%
D+22.2
D+16.7
D+14.9
133,292
D
52.3%Kerry65,922
46.7%Bush58,905
1.0%
D+5.6
—
D+8.0
126,144
current representation
Current officeholders
DSarah AnthonyState Senate · 21
State legislative officeholder from OpenStates nightly current-legislator data.
Its Democratic presidential margin was D+12.5 in 2024 and D+22.2 in 2008. About 265,000 residents lived here, with White alone at 73.9% in the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 22.2 points in 2008. Between 2020 and 2024 the district moved 3.2 points toward the Republican candidate; the 2024 margin was 12.5 points.
A population of 263,361, a 70% non-Hispanic-white share, and a median household income of $69,787 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 28 and State Senate District 19.
Akashic
Political twins — state-senate districts
The state-senate 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.
Michigan 21st State Senate District. Akashic. https://akashic.app/sld-upper/26021/. Accessed May 20, 2026. License: CC BY 4.0.
How did Michigan 21st State Senate District vote in 2024?
In 2024, Michigan 21st State Senate District voted Democratic by 12.5 points (D+12.5), carried by the Democratic candidate. Out of 146,007 votes cast, 80,747 went Democratic and 62,497 went Republican.
How many people live in Michigan 21st State Senate District?
Michigan 21st State Senate District has a population of 263,361 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Michigan 21st State Senate District?
Median household income in Michigan 21st State Senate District is $69,787 — below the national median of $80,734. The Michigan state median is $72,875.
What is the political history of Michigan 21st State Senate District?
Akashic tracks 6 presidential elections in Michigan 21st State Senate District from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
