St. Marys, PA, Pennsylvania: Realigner metro. In 2024, voted R+47%. Republican peak: R+56 in 1924.
Key facts
- 2024 presidential margin
- R+47MIT Election Lab
- Political archetype
- RealignerAkashic typology
- Population
- 30,5062024 5-year
- Median household income
- $66,3802024 5-year
- White (non-Hispanic)
- 95.0%2024 5-year
- Black
- 0.6%2024 5-year
- Hispanic / Latino
- 1.0%2024 5-year
- Peak Democratic margin
- D+41 in 1964MIT Election Lab
- Peak Republican margin
- R+56 in 1924MIT Election Lab
Constituent county margins for St. Marys, PA, PAOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 4,483 | 12,543 | 17,213 | ||
| R | 4,522 | 12,140 | 16,906 | ||
| R | 3,853 | 10,025 | 14,547 | ||
| R | 5,463 | 7,579 | 13,279 | ||
| D | 7,290 | 6,676 | 14,271 | ||
| R | 6,602 | 7,872 | 14,550 | ||
| R | 5,754 | 7,347 | 13,580 | ||
| D | 5,749 | 4,889 | 13,013 | ||
| D | 5,016 | 4,908 | 13,832 | ||
| R | 5,879 | 6,737 | 12,744 | ||
| R | 5,486 | 8,470 | 14,007 | ||
| R | 5,898 | 7,175 | 13,669 | ||
| D | 6,713 | 6,159 | 13,109 | ||
| R | 4,710 | 7,900 | 12,908 | ||
| D | 6,886 | 6,193 | 14,046 | ||
| D | 10,455 | 4,354 | 14,828 | ||
| D | 8,398 | 7,155 | 15,567 | ||
| R | 5,498 | 8,947 | 14,468 | ||
| R | 6,448 | 7,702 | 14,195 | ||
| D | 5,363 | 5,148 | 10,511 | ||
| D | 6,097 | 5,645 | 11,809 | ||
| R | 6,920 | 6,949 | 13,900 | ||
| D | 9,035 | 5,489 | 15,631 | ||
| D | 6,461 | 5,797 | 12,497 | ||
| D | 7,705 | 5,234 | 13,009 | ||
| R | 1,370 | 6,626 | 9,352 | ||
| R | 2,093 | 5,267 | 7,964 | ||
| R | 2,186 | 2,829 | 5,405 | ||
| O | 2,057 | 603 | 5,742 | ||
| R | 2,531 | 2,991 | 5,805 | ||
| R | 2,857 | 3,820 | 6,914 | ||
| R | 3,105 | 3,254 | 6,500 | ||
| R | 2,717 | 2,807 | 5,663 | ||
| D | 2,126 | 1,438 | 3,693 | ||
| — | — | — | — | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
42.5%
Italian
18.8%
Irish
13.5%
English
7.2%
Polish
5.9%
American
4.6%
French
1.6%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 48.4 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$66,380
St. Marys, PA ranks near the middle of US counties.
St. Marys, PA$66,380
Pennsylvania$77,971
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
8.7%
Child poverty is below the national average.
Children under 1812.3%
Working age (18–64)7.8%
Seniors (65+)8.4%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
98.4%
speak English only
Other Indo-European0.7%
Spanish0.4%
Asian & Pacific Islander0.3%
Other languages0.2%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 44.7% of residents not counted as adherents by any reporting body.
St. Marys, PA sits in the Mid-Atlantic. Its political identity was forged in the union halls of the mid-twentieth century, when industrial labor and the Democratic party became, for working people, two faces of the same political fact. That identity held for 1 consecutive presidential elections.
The unraveling was not abrupt. The Democratic margin in St. Marys, PA peaked at forty-one points in 1964; it narrowed steadily over the late twentieth century. The 2012 election delivered the metro to the Republican party for the first time in many years, by a margin of sixteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. The median household income of $66,380 is among the lowest at this geographic scale; 9% of residents live below the federal poverty line.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
St. Marys, PA, Pennsylvania — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/cbsa/41260/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did St. Marys, PA, Pennsylvania vote in 2024?
In 2024, St. Marys, PA, Pennsylvania voted Republican by 46.8 points (R+47), carried by the Republican candidate. Out of 17,213 votes cast, 4,483 went Democratic and 12,543 went Republican.
What is St. Marys, PA, Pennsylvania's political archetype?
Akashic classifies St. Marys, PA, Pennsylvania as a "Realigner" metro based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the metro has voted Democratic 13 times, Republican 20 times, and other 1 times.
When did St. Marys, PA, Pennsylvania last vote Democratic?
The most recent presidential election in which St. Marys, PA, Pennsylvania voted Democratic was 2008.
How many people live in St. Marys, PA, Pennsylvania?
St. Marys, PA, Pennsylvania has a population of 30,506 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in St. Marys, PA, Pennsylvania?
Median household income in St. Marys, PA, Pennsylvania is $66,380 — below the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of St. Marys, PA, Pennsylvania?
Akashic tracks 38 presidential elections in St. Marys, PA, Pennsylvania from 1876 to 2024. Of those, 13 went Democratic and 20 went Republican. The metro's archetype — "Realigner" — captures the overall trajectory of that voting record.