† 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
GroupMonongahelaPennsylvaniaUnited States
German21.8%21.6%12.5%
Irish17.0%14.8%9.4%
Italian16.9%10.6%4.8%
English12.1%8.3%9.5%
Polish8.4%5.4%2.2%
American2.9%4.4%5.3%
Slovak2.8%0.8%—
Scotch-Irish2.6%——
Mexican0.7%1.4%11.3%
Puerto Rican0.4%3.7%1.8%
Cuban0.4%0.2%0.7%
Guatemalan0.2%0.2%0.5%
Spanish0.2%——
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
Monongahela
Pennsylvania
United States
Median age
43
41.2
39.1
Age 18–24
11.3%
8.9%
9.2%
Age 65 and older
21.8%
19.5%
17.2%
Household economy
Measure
Monongahela
Pennsylvania
United States
Median household income
$59,861
$77,971
$84,427
Poverty rate
12.3%
11.7%
12.5%
Bachelor's degree or higher (25+)
22.8%
35.2%
35.6%
Languages at home
Measure
Monongahela
Pennsylvania
United States
Speaks a non-English language at home
3.8%
12.4%
22.3%
Spanish
1.9%
5.6%
13.6%
Religious landscape
Measure
Monongahela
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.
Monongahela, Pennsylvania
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+14.1%
2008
+9.0%
2012
+6.2%
2016
−13.9%
2020
−12.9%
2024
−18.6%
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. 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
40.5%Harris863
59.1%Trump1,259
0.5%
R+18.6
R+5.7
R+17.1
2,132
R
42.8%Biden940
55.7%Trump1,223
1.5%
R+12.9
D+1.0
R+17.3
2,195
R
41.0%Clinton786
54.9%Trump1,053
4.2%
R+13.9
R+20.1
R+16.0
1,919
D
52.4%Obama1,052
46.1%Romney927
1.5%
D+6.2
R+2.7
D+2.4
2,009
D
53.4%Obama1,031
44.4%McCain858
2.2%
D+9.0
R+5.1
D+1.7
1,932
D
57.0%Kerry1,074
42.9%Bush809
0.1%
D+14.1
—
D+16.5
1,885
Monongahela sits at the confluence of the Monongahela and Chartiers Creek in Washington County, a post-industrial corridor where decades of steel-industry decline have steadily realigned voter preferences away from their historic Democratic baseline.
Across the recorded series it reached a Democratic high of 14.1 points in 2004 and a Republican high of 18.6 points in 2024. Between 2020 and 2024 the city moved 5.7 points toward the Republican candidate; the 2024 margin was 18.6 points.
A population of 4,109, a 93% non-Hispanic-white share, and a median household income of $59,861 describe the city.
In 2024, Monongahela, Pennsylvania voted Republican by 18.6 points (R+18.6), carried by the Republican candidate. Out of 2,132 votes cast, 863 went Democratic and 1,259 went Republican.
When did Monongahela, Pennsylvania last vote Democratic?
The most recent presidential election in which Monongahela, Pennsylvania voted Democratic was 2012.
How many people live in Monongahela, Pennsylvania?
Monongahela, Pennsylvania has a population of 4,109 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Monongahela, Pennsylvania?
Median household income in Monongahela, Pennsylvania is $59,861 — below the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of Monongahela, Pennsylvania?
Akashic tracks 6 presidential elections in Monongahela, Pennsylvania from 2004 to 2024. Of those, 3 went Democratic and 3 went Republican.
