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Akashic

state senate district

Pennsylvania 21st State Senate District

Office (updates table and map)

President margin by year

Place winner margin

1876–2024 · D minus R

Full record · 1876 → 2024

2024

Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab

The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.

People and households

Who lives here

Exact values for this place, its state, and the United States.

Race · ethnicity · ancestry

Communities and origins

German31.1%21.6%12.5%

Irish17.1%14.8%9.4%

English10.9%8.3%9.5%

Italian9.6%10.6%4.8%

Polish6.3%5.4%2.2%

American4.8%4.4%5.3%

Scottish2.0%1.1%1.3%

Slovak1.3%0.8%—

African American†1.2%8.7%9.9%

Puerto Rican0.4%3.7%1.8%

Mexican0.4%1.4%11.3%

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	PA SD 21	Pennsylvania	United States
Median age	45.2	41.2	39.1
Age 18–24	8.7%	8.9%	9.2%
Age 65 and older	21.8%	19.5%	17.2%

Household economy

Measure	PA SD 21	Pennsylvania	United States
Median household income	$65,242	$77,971	$84,427
Poverty rate	11.8%	11.7%	12.5%
Bachelor's degree or higher (25+)	30.8%	35.2%	35.6%

Housing and tenure

Measure	PA SD 21	Pennsylvania	United States
Owner-occupied homes	75.6%	69.3%	65.2%
Renter-occupied homes	24.4%	30.7%	34.8%
Median home value	$169,200	$254,500	$332,700
Median gross rent (monthly)	$828	$1,209	$1,413
Renters paying 30%+ of income	41.6%	48.2%	51.1%
Vacant housing units	18.5%	9.2%	10.1%

Getting to work

Measure	PA SD 21	Pennsylvania	United States
Mean commute	24.5 min	26.3 min	26.4 min
Commutes 60 minutes or more	7.9%	8.1%	8.6%
Drives alone to work	77.9%	68.2%	68.8%
Takes public transit	0.3%	3.6%	3.2%
Works from home	9.6%	15.6%	15.1%

Languages at home

Measure	PA SD 21	Pennsylvania	United States
Speaks a non-English language at home	3.6%	12.4%	22.3%
Spanish	1.1%	5.6%	13.6%

Religious landscape

Measure	PA SD 21	Pennsylvania	United States
Catholic	—	21.9%	18.6%
Evangelical Protestant	—	9.3%	16.5%
Unclaimed / not counted	—	53.1%	51.5%

Origins and service

Measure	PA SD 21	Pennsylvania	United States
Foreign-born residents	1.1%	7.7%	14.1%
Naturalized citizens	0.7%	4.3%	7.4%
Not U.S. citizens	0.4%	3.4%	6.8%
Veterans (18+)	8.6%	6.1%	6.2%
Income inequality (Gini)	0.440	0.474	0.483

American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations · American Community Survey 2024 — housing and tenure (B25003, B25002, B25077, B25064, B25070), commuting (B08013, B08303, B08301), origins and service (B05002, B21001, B19083).

President results by year

Modeled candidate-vote estimate on current district boundaries

HarrisDemocratic28.2%39,815TrumpRepublican71.0%100,435OtherAll other candidates0.8%1,135

R+42.9

Lead: 60,620
Total: 141,385
vs nation: R+41.4

modeled Census-place estimatemodeled estimate

BidenDemocratic28.4%39,257TrumpRepublican70.2%96,991OtherAll other candidates1.4%1,918

R+41.8

Lead: 57,734
Total: 138,166
vs nation: R+46.2

modeled Census-place estimatemodeled estimate

ClintonDemocratic26.7%33,202TrumpRepublican68.1%84,763OtherAll other candidates5.2%6,454

R+41.4

Lead: 51,561
Total: 124,419
vs nation: R+43.5

modeled Census-place estimatemodeled estimate

ObamaDemocratic33.0%37,882RomneyRepublican65.1%74,782OtherAll other candidates1.9%2,175

R+32.1

Lead: 36,900
Total: 114,839
vs nation: R+36.0

modeled Census-place estimatemodeled estimate

ObamaDemocratic37.3%44,718McCainRepublican60.7%72,663OtherAll other candidates2.0%2,404

R+23.3

Lead: 27,945
Total: 119,785
vs nation: R+30.6

modeled Census-place estimatemodeled estimate

KerryDemocratic35.9%41,880BushRepublican63.5%74,210OtherAll other candidates0.6%694

R+27.7

Lead: 32,330
Total: 116,784
vs nation: R+25.2

modeled Census-place estimatemodeled estimate

GoreDemocratic36.6%37,121BushRepublican60.2%61,115OtherAll other candidates3.3%3,302

R+23.6

Lead: 23,994
Total: 101,538
vs nation: R+24.1

modeled Census-place estimatemodeled estimate

ClintonDemocratic38.3%35,691DoleRepublican47.8%44,622OtherAll other candidates13.9%12,955

R+9.6

Lead: 8,931
Total: 93,268
vs nation: R+18.1

modeled Census-place estimatemodeled estimate

Key facts

2024 presidential margin: R+42.9MIT Election Lab
Population: 258,8282024 5-year
Population density: 78 / sq mi2024 5-year · TIGER/Line
Land area: 3,313 sq miTIGER/Line
Median household income: $65,2422024 5-year
White (non-Hispanic): 92.9%2024 5-year
Black: 1.4%2024 5-year
Hispanic / Latino: 1.4%2024 5-year
Peak Democratic margin: D+18.3 in 1964MIT Election Lab
Peak Republican margin: R+55.5 in 1928MIT Election Lab
Most similar: State Senate District 41, PA · twin score 97.9

presidential history

Party record book

Pennsylvania 21st State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.

1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark

Largest share of the presidential candidate vote cast here.

Democratic

Lyndon B. Johnson1964

59.0%

50,564 votes · D+18.3 · modeled estimate

Runner-up · Samuel J. Tilden, 1876 · 47.0%

Republican

Herbert Hoover1928

77.4%

53,891 votes · R+55.5 · modeled estimate

Runner-up · Dwight D. Eisenhower, 1956 · 71.1%

Most votes

Largest number of votes cast for the party’s presidential nominee here.

Democratic

Lyndon B. Johnson1964

50,564votes

59.0% of the vote · D+18.3 · modeled estimate

Runner-up · Barack Obama, 2008 · 44,718 votes

Republican

Donald Trump2024

100,435votes

71.0% of the vote · R+42.9 · modeled estimate

Runner-up · Donald Trump, 2020 · 96,991 votes

Best relative to the U.S.

This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.

Democratic

Walter Mondale1984

−4.2pts D vs U.S.

Place R+22.4 · U.S. R+18.2 · modeled estimate

Runner-up · Lyndon B. Johnson, 1964 · −4.3 pts

Republican

Donald Trump2020

+46.2pts R vs U.S.

Place R+41.8 · U.S. D+4.5 · modeled estimate

Runner-up · Donald Trump, 2016 · +43.5 pts

current representation

Current officeholders

RScott HutchinsonState Senate · 21

State legislative officeholder from OpenStates nightly current-legislator data.

U.S. House elections · 1 House

Senate and governor results are in the Office selector at the top of this page.

U.S. House

Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.

Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year	Vote lead	Democratic	Republican	Total
2024	R	28.5%40,903	71.5%102,397	143,300

Stretching across rural south-central Pennsylvania, this district delivered a nearly 42.9-point Republican presidential margin in 2024, reflecting the demographic and economic profile common to small-town and agricultural communities in the region.

Across the recorded series it reached a Democratic high of 18.3 points in 1964 and a Republican high of 55.5 points in 1928. Between 2020 and 2024 the district moved 1.1 points toward the Republican candidate; the 2024 margin was 42.9 points.

A population of 258,828, a 93% non-Hispanic-white share, and a median household income of $65,242 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 41 and State Senate District 1.

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 41

2012–2024 trajectory

State Senate District 1

2016–2024 trajectory12-yr trend≠ population scale

State Senate District 27

2016–2024 trajectory12-yr trend≠ Scottish ancestry

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.

District research tools

Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →

Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

Pennsylvania 21st State Senate District. Akashic. https://akashic.app/sld-upper/42021/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Pennsylvania at the ballot boxAll elections →

Presidentcounty detail2024 US Senatestatewide2024 Governorstate + county2022 US Houseall districts2024

Places within Pennsylvania 21st State Senate District

counties it covers6

Butler County Clarion County Erie County Forest County Venango County Warren County

Frequently asked questions

How did Pennsylvania 21st State Senate District vote in 2024?

In 2024, Pennsylvania 21st State Senate District voted Republican by 42.9 points (R+42.9), carried by the Republican candidate. Out of 141,385 votes cast, 39,815 went Democratic and 100,435 went Republican.

When did Pennsylvania 21st State Senate District last vote Democratic?

The most recent presidential election in which Pennsylvania 21st State Senate District voted Democratic was 1964.

How many people live in Pennsylvania 21st State Senate District?

Pennsylvania 21st State Senate District has a population of 258,828 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Pennsylvania 21st State Senate District?

Median household income in Pennsylvania 21st State Senate District is $65,242 — below the national median of $80,734. The Pennsylvania state median is $77,971.

What is the political history of Pennsylvania 21st State Senate District?

Akashic tracks 38 presidential elections in Pennsylvania 21st State Senate District from 1876 to 2024. Of those, 1 went Democratic and 36 went Republican.