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Ohio State Senate District 21

Ohio State Senate District 21

Ohio · Latest: 2024↑ D+14.2 vs 2020

Safe Democratic — shifted 14.2pp toward Democrats in 2024 — 375K residents

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Ohio State Senate District 21 is a state senate district that has a population of 375,395. In the 2024 presidential election, it voted Democratic with a margin of D+64.8. Akashic Edge tracks 5 presidential elections here, dating back to 2008.

Ohio State Senate District 21 Presidential Election Results, 2008–2024
YearDem %Rep %MarginSwing
202481.9%17.1%D+64.8D+14.2
2020*74.8%24.2%D+50.6R+18.2
2016*83.3%14.5%D+68.8R+0.3
2012*84.6%15.4%D+69.1D+2.3
2008*83.0%16.2%D+66.8—

* Pre-2022 results projected onto current district boundaries. Actual boundaries at the time of the election may have differed.

Political Identity

What defines OH-SD-21?

It has a majority-minority electorate where racial demographics are the primary driver of partisan lean.

Similarity Explorer

Similar state senate districts

Nearest neighbors matched on the same place-page feature set used across the dossier system.
8 visible matches
Historian Query

Ask the Historian

Explore OH-SD-21's political evolution with the Historian
Automated Readout

Key Insights

High-confidence patterns distilled from this geography's election history.
  • Has voted Democratic in the last 5 presidential elections
  • Latest election (2024) was a Democratic landslide with a 64.8% margin
  • Swung 14.2 points toward Democratic between 2020 and 2024
Race & Ancestry

Who Lives Here

A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.
OH-SD-21Census ACS 2024
Census race profile
Major Census race and ethnicity groups shown as a share of total population.
Expand rows for ancestry detail
Black 59.0%White (Non-Hispanic) 32.4%Multiracial 3.4%Hispanic 2.8%Asian 2.3%
GroupOH-SD-21StateNational
Black / African American
59.0%12.2%12.2%
White (Non-Hispanic)
32.4%75.8%57.4%
Multiracial / Other
3.4%4.5%4.0%
Hispanic / Latino
2.8%4.8%19.3%
Asian
2.3%2.6%6.0%
Native American / Alaska Native
0.2%0.2%0.9%
Method notes

Census treats race and Hispanic/Latino origin as separate questions. Race categories other than Hispanic reflect total populations (small Hispanic overlap in Black, Asian, AIAN, NHPI). “Multiracial / Other” is derived as a non-overlapping remainder.

Detailed ancestry data unavailable for this geography.

Who lives in Ohio State Senate District 21? 375,395 residents as of the 2020 Census.

Demographic Comparison

Demographics

Read this geography's profile in three layers: local, state (where available), and national baseline.
OH-SD-21 vs Ohio vs National375K residents
Population & electorate

Scale, voting-age share, and this geography's footprint inside the national electorate.

Total population
Local vs state vs U.S.
375K
local
375KState 11.8MNational 334.9M
Share of U.S. population
Local vs state vs U.S.
0.11%
local
0.11%National 100%
Voting-age population
Local vs state vs U.S.
78.1%
local
78.1%State 75.6%National 75.7%
Economic profile

Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.

Median household income
Local vs state vs U.S.
N/A
local
N/AState $72,438National $83,960
Poverty rate
Local vs state vs U.S.
N/A
local
N/AState 13.3%National 12.5%
College degree
Local vs state vs U.S.
N/A
local
N/AState 31.6%National 35.6%
Homeownership
Local vs state vs U.S.
N/A
local
N/AState 67.2%National 65.2%
Community profile

Age structure, language use, and nativity signals that explain how this geography differs from state and nation.

Median age
Local vs state vs U.S.
N/A
local
N/AState 39.8 yrsNational 39.1 yrs
Age 18–29
Local vs state vs U.S.
N/A
local
N/AState 15.4%National 15.7%
Age 65+
Local vs state vs U.S.
N/A
local
N/AState 18.3%National 17.0%
Foreign born
Local vs state vs U.S.
N/A
local
N/AState 5.2%National 14.1%
Non-English at home
Local vs state vs U.S.
N/A
local
N/AState 8.0%National 22.2%
English only
Local vs state vs U.S.
N/A
local
N/AState 92.0%National 77.8%
Voter Turnout

Turnout in OH-SD-21

Estimated using 2020 Census voting-age population.
2024 Turnout
55.7%
vs Previous
-70.4pp
Voting-Age Pop
293,048
History
2008–2024
Competitiveness

How competitive is OH-SD-21?

Safe DAvg margin: D+61.4 (last 3 elections)
2008
D+66.8
2012
D+69.1
2016
D+68.8
2020
D+50.6
2024
D+64.8
Elasticity
18.5pp
margin range
Party Flips
0
last 30 years
5-Elec Avg
D+64.0

Other Ohio State Senate Districts

32 total
NameMargin ↓
OH-SD-09D+47.2
OH-SD-25D+43.7
OH-SD-15D+40.8
OH-SD-23D+33.8
OH-SD-11D+7.0
OH-SD-03D+7.0
OH-SD-16D+5.5
OH-SD-06D+3.9
OH-SD-24D+3.3
OH-SD-27D+1.4
OH-SD-18D+0.9
OH-SD-28D+0.6
OH-SD-02R+7.3
OH-SD-13R+8.6
OH-SD-08R+11.6
OH-SD-07R+15.8
OH-SD-29R+20.1
OH-SD-19R+20.7
OH-SD-32R+22.0
OH-SD-33R+23.9
OH-SD-04R+24.3
OH-SD-10R+27.5
OH-SD-20R+28.9
OH-SD-05R+30.2
OH-SD-22R+33.6
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