† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupArnoldPennsylvaniaUnited States
German19.4%21.6%12.5%
Italian12.5%10.6%4.8%
Irish11.7%14.8%9.4%
English7.2%8.3%9.5%
Polish6.1%5.4%2.2%
Slovak3.0%0.8%—
American2.9%4.4%5.3%
Scottish1.4%1.1%1.3%
African American†24.4%8.7%9.9%
Mexican1.1%1.4%11.3%
Puerto Rican1.1%3.7%1.8%
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
Arnold
Pennsylvania
United States
Median age
40.6
41.2
39.1
Age 18–24
6.2%
8.9%
9.2%
Age 65 and older
19.4%
19.5%
17.2%
Household economy
Measure
Arnold
Pennsylvania
United States
Median household income
$45,417
$77,971
$84,427
Poverty rate
25.5%
11.7%
12.5%
Bachelor's degree or higher (25+)
17.8%
35.2%
35.6%
Languages at home
Measure
Arnold
Pennsylvania
United States
Speaks a non-English language at home
5.6%
12.4%
22.3%
Spanish
1.7%
5.6%
13.6%
Other languages
2.7%
0.5%
0.8%
Religious landscape
Measure
Arnold
Pennsylvania
United States
Catholic
—
21.9%
18.6%
Evangelical Protestant
—
9.3%
16.5%
Unclaimed / not counted
—
53.1%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Arnold, Pennsylvania
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+31.1%
2008
+26.9%
2012
+31.6%
2016
+18.7%
2020
+18.9%
2024
+15.9%
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. 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
D
57.7%Harris1,088
41.8%Trump789
0.5%
D+15.9
R+3.0
D+17.3
1,886
D
58.8%Biden1,106
39.9%Trump751
1.3%
D+18.9
D+0.2
D+14.4
1,882
D
57.8%Clinton1,037
39.2%Trump702
3.0%
D+18.7
R+12.9
D+16.6
1,793
D
65.2%Obama1,162
33.6%Romney599
1.1%
D+31.6
D+4.7
D+27.8
1,781
D
63.0%Obama1,267
36.1%McCain726
0.9%
D+26.9
R+4.2
D+19.6
2,012
D
65.1%Kerry1,382
34.0%Bush722
0.9%
D+31.1
—
D+33.5
2,123
Arnold, tucked along the Allegheny in Westmoreland County, carries the demographic imprint of its steel-industry past — a small, older, working-class electorate that has historically delivered outsized Democratic margins in down-ballot races.
Across the recorded series it reached a Democratic high of 31.6 points in 2012. Between 2020 and 2024 the city moved 3.0 points toward the Republican candidate; the 2024 margin was 15.9 points.
A population of 4,704, a 68% non-Hispanic-white share, and a median household income of $45,417 describe the city.
In 2024, Arnold, Pennsylvania voted Democratic by 15.9 points (D+15.9), carried by the Democratic candidate. Out of 1,886 votes cast, 1,088 went Democratic and 789 went Republican.
How many people live in Arnold, Pennsylvania?
Arnold, Pennsylvania has a population of 4,704 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Arnold, Pennsylvania?
Median household income in Arnold, Pennsylvania is $45,417 — below the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of Arnold, Pennsylvania?
Akashic tracks 6 presidential elections in Arnold, Pennsylvania from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
