Pennsylvania 15th State Senate District, Pennsylvania: Tossup district. In 2024, voted D+6%. Republican peak: R+68 in 1928.
Key facts
- 2024 presidential margin
- D+6MIT Election Lab
- Political archetype
- TossupAkashic typology
- Population
- 154,6902024 5-year
- Median household income
- $76,2422024 5-year
- White (non-Hispanic)
- 63.0%2024 5-year
- Black
- 17.2%2024 5-year
- Hispanic / Latino
- 11.8%2024 5-year
- Peak Democratic margin
- D+9 in 2008MIT Election Lab
- Peak Republican margin
- R+68 in 1928MIT Election Lab
Constituent county margins for State Senate District 15, 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 |
|---|---|---|---|---|---|
| D | 41,839 | 37,110 | 80,168 | ||
| D | 42,190 | 35,473 | 78,719 | ||
| D | 34,564 | 32,511 | 70,394 | ||
| D | 34,702 | 30,688 | 66,397 | ||
| D | 37,378 | 31,109 | 69,190 | ||
| R | 29,539 | 34,879 | 64,745 | ||
| R | 23,712 | 28,648 | 53,768 | ||
| R | 21,867 | 23,726 | 49,662 | ||
| R | 19,759 | 24,293 | 52,834 | ||
| R | 18,738 | 26,130 | 45,231 | ||
| R | 17,935 | 29,021 | 47,358 | ||
| R | 14,557 | 23,524 | 41,871 | ||
| R | 18,344 | 25,009 | 44,401 | ||
| R | 12,065 | 29,009 | 41,809 | ||
| R | 13,610 | 25,850 | 43,688 | ||
| D | 24,635 | 22,818 | 47,771 | ||
| R | 18,141 | 32,972 | 51,341 | ||
| R | 15,611 | 32,767 | 48,578 | ||
| R | 16,551 | 31,187 | 47,891 | ||
| R | 14,812 | 25,031 | 40,268 | ||
| R | 16,390 | 23,890 | 40,459 | ||
| R | 20,461 | 22,645 | 43,257 | ||
| D | 23,106 | 21,152 | 44,602 | ||
| R | 11,972 | 19,378 | 32,131 | ||
| R | 4,869 | 26,232 | 31,311 | ||
| R | 4,810 | 14,870 | 21,856 | ||
| R | 6,405 | 13,938 | 21,325 | ||
| R | 6,134 | 7,454 | 14,290 | ||
| O | 3,990 | 3,211 | 13,792 | ||
| R | 4,031 | 8,353 | 13,178 | ||
| R | 2,692 | 8,818 | 12,144 | ||
| R | 3,947 | 7,838 | 12,204 | ||
| R | 3,517 | 7,880 | 11,788 | ||
| R | 4,017 | 5,881 | 10,233 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
21.8%
Irish
10.7%
English
6.6%
Italian
6.5%
American
5.6%
Polish
2.7%
Scottish
1.3%
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: 39.4 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
$76,242
State Senate District 15 ranks near the middle of US counties.
State Senate District 15$76,242
Pennsylvania$77,971
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
12.9%
Children face moderate poverty.
Children under 1816.7%
Working age (18–64)11.5%
Seniors (65+)14.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
85.2%
speak English only
Spanish6.8%
Other Indo-European5.1%
Asian & Pacific Islander2.0%
Other languages1.0%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 55.4% of residents not counted as adherents by any reporting body.
With a 2024 presidential margin of R+47.9, this district sits at the far end of Pennsylvania's partisan spectrum. Its composition reflects the rural and small-town demographics that have driven the state's interior counties toward lopsided Republican margins over the past decade.
The district's recent history is a story of close margins. The Democratic margin reached nine points in 2008; the Republican margin reached sixty-eight points in 1928. Most other elections have been decided by single-digit points.
Its demographics — a population of 154,690, a 63% non-Hispanic-white share, a median household income of $76,242 — situate the district close to national averages on several dimensions.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Senate District 15, Pennsylvania. Akashic. https://akashic.app/sld-upper/42015/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 15, Pennsylvania vote in 2024?
In 2024, State Senate District 15, Pennsylvania voted Democratic by 5.9 points (D+6), carried by the Democratic candidate. Out of 80,168 votes cast, 41,839 went Democratic and 37,110 went Republican.
What is State Senate District 15, Pennsylvania's political archetype?
Akashic classifies State Senate District 15, Pennsylvania as a "Tossup" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 7 times, Republican 26 times, and other 1 times.
When did State Senate District 15, Pennsylvania last vote Republican?
The most recent presidential election in which State Senate District 15, Pennsylvania voted Republican was 2004.
How many people live in State Senate District 15, Pennsylvania?
State Senate District 15, Pennsylvania has a population of 154,690 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 15, Pennsylvania?
Median household income in State Senate District 15, Pennsylvania is $76,242 — below the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of State Senate District 15, Pennsylvania?
Akashic tracks 38 presidential elections in State Senate District 15, Pennsylvania from 1876 to 2024. Of those, 7 went Democratic and 26 went Republican. The district's archetype — "Tossup" — captures the overall trajectory of that voting record.