Akashic
1892–2024
Akashic
Maryland 21st State Senate District
presidential margin
2008D+45.02012D+52.62016D+57.22020D+60.12024D+55.3
full record · 2008 → 2024
D+55.3
2024
median income$101,949U.S. $80,734 · MD $103,678
median age32.6U.S. 39.1 · MD 39.5
poverty rate14.1%U.S. 12.5% · MD 9.5%
bachelor’s+ (25+)39.9%U.S. 35.6% · MD 43.5%
non-english24.7%U.S. 22.3% · MD 21.1%
race · ethnicity · ancestry
German8.0%
Irish7.2%
English6.5%
African American†24.9%
Nigerian1.5%
African1.1%
Salvadoran8.6%
Mexican3.7%
Guatemalan2.9%
Filipino2.8%
Asian Indian2.5%
Chinese1.7%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Prince George's County.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Maryland 21st State Senate District

Akashic
Maryland 21st State Senate DistrictHarrisD+55.3
2024
2024 presidential margin for Maryland 21st State Senate DistrictThe boundary of Maryland 21st State Senate District, filled by its 2024 presidential margin (D+55.3), over faint outlines of the counties it is drawn from.Maryland 21st State Senate District · D+55.3
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic76.1%42,720
Donald TrumpRepublican20.8%11,689
Jill SteinGreen3.1%1,714
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 2 counties it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (2 counties) — table
2024 presidential result by county for Maryland 21st State Senate District — winner and D-vs-R margin.
CountyWinnerMargin
Anne Arundel County, MDDemocraticD+13.8
Prince George's County, MDDemocraticD+75.1
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
D
76.1%Harris42,720
20.8%Trump11,689
3.1%Stein1,714
+55.3%
56,123
D
79.6%Biden39,586
19.5%Trump9,701
0.9%Jorgensen427
+60.1%
49,714
D
75.8%Clinton37,128
18.5%Trump9,086
5.7%Johnson2,794
+57.2%
49,008
D
76.3%Obama34,196
23.7%Romney10,619
0.0%
+52.6%
44,815
D
71.8%Obama29,844
26.8%McCain11,132
1.4%Nader561
+45.0%
41,537
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: +55.3% in 2024.+55.3%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+45.0%
2012+52.6%
2016+57.2%
2020+60.1%
2024+55.3%
DemocraticRepublican
current representation
Current officeholders
DJim RosapepeState Senate · 21

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

Maryland's 21st Senate District posts a modest Democratic lean by state standards, suggesting a competitive suburban electorate that has historically resisted the double-digit margins seen in neighboring urban districts.

Across the recorded series it reached a Democratic high of 60.1 points in 2020. Between 2020 and 2024 the district moved 4.8 points toward the Republican candidate; the 2024 margin was 55.3 points.

A population of 133,402, a 33% non-Hispanic-white share, and a median household income of $101,949 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 22 and State Senate District 22.

Political twins — state-senate districts

The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State Senate District 22
Maryland
91.9twin score
2012–2024 trajectory≠ elasticity
State Senate District 22
North Carolina
91.4twin score
2012–2024 trajectory≠ college share
Legislative (Senate) District 37
Washington
90.9twin score
elasticity2016–2024 trajectory≠ % Asian

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.
Maryland 21st State Senate District. Akashic. https://akashic.app/sld-upper/24021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Places within Maryland 21st State Senate District

counties it covers2
Anne Arundel CountyPrince George's County

Frequently asked questions

How did Maryland 21st State Senate District vote in 2024?
In 2024, Maryland 21st State Senate District voted Democratic by 55.3 points (D+55.3), carried by the Democratic candidate. Out of 56,123 votes cast, 42,720 went Democratic and 11,689 went Republican.
How many people live in Maryland 21st State Senate District?
Maryland 21st State Senate District has a population of 133,402 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Maryland 21st State Senate District?
Median household income in Maryland 21st State Senate District is $101,949 — above the national median of $80,734. The Maryland state median is $103,678.
What is the political history of Maryland 21st State Senate District?
Akashic tracks 5 presidential elections in Maryland 21st State Senate District from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican.