Allegheny County, PA

PA · Presidential Elections 1892–2024

D+20.2
2024 Margin
R+0.2%
2020→2024 Swing
D since 1976
Voting Streak
1.2M
Population

Allegheny County, PA (Pennsylvania) voted D+20.2 for Kamala Harris (Democrat) in the 2024 presidential election, with Harris receiving 429,916 votes (59.4%) to 283,595 (39.18%) for Trump.

This represents a R+0.2% swing toward Republicans compared to 2020. Allegheny County is classified as a solid Democratic county. Allegheny County has voted Democratic in every presidential election since 1976. The county has a population of approximately 1,238,177.

Quick Stats

2024 ResultD+20.2
2020→2024 SwingR+0.2%
Voting StreakD since 1976
Elections on Record34

Demographics

Population1,238,177
Median Age
40.6(US: 38.7)
College (BA+)
45.8%(US: 35.2%)
Median Income
$78,548(US: $80k)
White (non-Hisp)
76.2%(US: 57.6%)
Hispanic
3.0%(US: 19.1%)
Black
13.1%(US: 12.2%)
Asian
4.1%(US: 5.7%)
Homeownership
65.2%(US: 64.5%)
Poverty Rate
11.5%(US: 12.3%)
Veterans
5.7%(US: 6.2%)
Non-English (CVAP)
5.2%(US: 17.0%)
Source: Census ACS 5-Year (2020-2024)

Community Profile

Religious Composition

Source: Religion Census 2020
Catholic
36.7%(Above Average)
Mainline Protestant
8.4%(Above Average)
Evangelical
7.6%(Below Average)
Black Protestant
1.8%
Jewish
0.6%
+ 1 more traditions

Ancestry Groups

Source: Census ACS

Top reported ancestry groups (compared to national average).

German
22.3%Above Average(1.8x)
Irish
16.9%Above Average(1.8x)
Italian
14.5%Significant Hub(3.0x)
English
8.4%
Polish
7.6%Significant Hub(3.1x)
American Heritage
2.7%
+ 3 more reported ancestry groups

Age Distribution

Median:40.6 yrs(US: 38.5)
Under 18
18.6%↓
18-29
8.7%↓
30-44
21.9%↑
45-64
30.6%↑
65+
20.2%↑
National average

Employment by Industry

Census ACS
Professional & Technical
14.3%(1.2x US)
Retail Trade
10.5%
Educational Services
7.8%
Manufacturing
7.5%(0.8x US)
Construction
5.0%(0.7x US)
Healthcare & Social Services
4.4%
National average

Presidential Elections

Presidential Results

YearDemocratRepublicanMarginSwing
202459.4%(429,916)39.2%(283,595)D+20.2R+0.2
202059.6%(429,065)39.2%(282,324)D+20.4D+3.9
201655.9%(367,617)39.5%(259,480)D+16.5D+1.9
201256.5%(352,687)42.0%(262,039)D+14.5R+0.9
200857.3%(373,153)41.8%(272,347)D+15.5D+0.4
200457.1%(368,912)42.1%(271,925)D+15.0R+1.2
200056.6%(329,963)40.4%(235,361)D+16.2D+1.3
199652.8%(284,480)37.9%(204,067)D+14.9R+8.0
199252.8%(324,004)29.8%(183,035)D+23.0D+2.9
198859.5%(348,814)39.4%(231,137)D+20.1D+6.9

Source: Official state election returns via MIT Election Data + Science Lab

Presidential Margin Trend

Allegheny County, PA • 1892–2024

D+R++60+40+200-20-40-6018921900190819161924193219401948195619641972198019881996200420122020
Democratic margin
Republican margin

Senate Elections

Senate Results

YearDemocratRepublicanMarginSwing
202459.4%(425,280)38.1%(272,861)D+21.3R+7.2
202263.4%(363,873)35.0%(200,632)D+28.5R+4.7
201865.7%(355,907)32.6%(176,351)D+33.1D+18.3
201655.2%(357,450)40.4%(261,316)D+14.9R+5.7
201259.3%(362,459)38.7%(236,546)D+20.6D+11.0
201054.8%(232,996)45.2%(192,257)D+9.6R+20.2
200664.8%(298,096)35.0%(161,144)D+29.8D+26.8
200448.1%(298,010)45.2%(279,698)D+3.0R+7.5
200054.2%(306,410)43.8%(247,405)D+10.4D+32.1
199837.1%(125,944)58.7%(199,654)R+21.7R+26.7

Source: Official state election returns via MIT Election Data + Science Lab

Governor Elections

Governor Results

YearDemocratRepublicanMarginSwing
202268.7%(393,386)29.7%(169,913)D+39.0D+2.8
201867.4%(364,710)31.2%(168,893)D+36.2D+19.6
201458.3%(207,017)41.7%(148,057)D+16.6D+16.7
201049.9%(213,429)50.1%(213,889)R+0.1R+19.9
200659.8%(275,227)40.0%(184,063)D+19.8D+9.5
200253.7%(209,708)43.4%(169,414)D+10.3D+22.1
199836.4%(127,994)48.1%(169,316)R+11.7R+14.7
199443.3%(193,459)40.3%(180,260)D+3.0R+40.9
199072.0%(281,883)28.1%(109,895)D+43.9D+29.7
198656.6%(242,296)42.4%(181,562)D+14.2D+15.5

Source: Official state election returns via MIT Election Data + Science Lab

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