Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
President results by year
Vote totals, margins, and source status
HarrisDemocratic39.7%904TrumpRepublican59.3%1,350OtherAll other candidates1.0%23
R+19.6
Lead
446
Total
2,277
vs nation
R+18.1
Turnout
—
BidenDemocratic39.8%882TrumpRepublican58.6%1,300OtherAll other candidates1.6%36
R+18.8
Lead
418
Total
2,218
vs nation
R+23.3
Turnout
—
ClintonDemocratic35.6%711TrumpRepublican60.2%1,203OtherAll other candidates4.2%84
R+24.6
Lead
492
Total
1,998
vs nation
R+26.7
Turnout
—
ObamaDemocratic40.4%716RomneyRepublican58.5%1,036OtherAll other candidates1.1%20
R+18.1
Lead
320
Total
1,772
vs nation
R+21.9
Turnout
—
ObamaDemocratic40.4%808McCainRepublican57.8%1,157OtherAll other candidates1.8%36
R+17.4
Lead
349
Total
2,001
vs nation
R+24.7
Turnout
—
KerryDemocratic42.9%858BushRepublican57.0%1,141OtherAll other candidates<0.1%1
R+14.1
Lead
283
Total
2,000
vs nation
R+11.7
Turnout
—
Key facts
2024 presidential margin
R+19.6MIT Election Lab
Population
3,8312024 5-year
Median household income
$59,9632024 5-year
White (non-Hispanic)
88.6%2024 5-year
Black
0.5%2024 5-year
Hispanic / Latino
4.3%2024 5-year
Peak Republican margin
R+24.6 in 2016MIT Election Lab
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−14.1%
2008
−17.4%
2012
−18.1%
2016
−24.6%
2020
−18.8%
2024
−19.6%
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; not shown when either cycle is estimated or under source review. 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
R
39.7%Harris904
59.3%Trump1,350
1.0%
R+19.6
R+0.7
R+18.1
2,277
R
39.8%Biden882
58.6%Trump1,300
1.6%
R+18.8
D+5.8
R+23.3
2,218
R
35.6%Clinton711
60.2%Trump1,203
4.2%
R+24.6
R+6.6
R+26.7
1,998
R
40.4%Obama716
58.5%Romney1,036
1.1%
R+18.1
R+0.6
R+21.9
1,772
R
40.4%Obama808
57.8%McCain1,157
1.8%
R+17.4
—
R+24.7
2,001
R
42.9%Kerry858
57.0%Bush1,141
0.1%
R+14.1
—
R+11.7
2,000
Federal and statewide elections · 2 House · 1 Senate
U.S. House
Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
Source · MIT Election Lab (MEDSL), Senate. CC BY 4.0.
Year
Won
Democratic
Republican
Total
2024
R
40.9%919
56.4%1,269
2,249
Irwin sits along Jacob's Creek in Westmoreland County, a historically working-class borough where countywide swings toward Republicans since 2016 have reshaped competitive patterns that once favored Democrats by comfortable margins.
Across the recorded series it reached a Republican high of 24.6 points in 2016. Between 2020 and 2024 the city moved 0.7 points toward the Republican candidate; the 2024 margin was 19.6 points.
A population of 3,831, a 89% non-Hispanic-white share, and a median household income of $59,963 describe the city.
In 2024, Irwin, Pennsylvania voted Republican by 19.6 points (R+19.6), carried by the Republican candidate. Out of 2,277 votes cast, 904 went Democratic and 1,350 went Republican.
How many people live in Irwin, Pennsylvania?
Irwin, Pennsylvania has a population of 3,831 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Irwin, Pennsylvania?
Median household income in Irwin, Pennsylvania is $59,963 — below the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of Irwin, Pennsylvania?
Akashic tracks 6 presidential elections in Irwin, Pennsylvania from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.