Indiana 15th State Senate District, Indiana: Republican loyalist district. In 2024, voted R+12%. Republican peak: R+19 in 2016.
Key facts
- 2024 presidential margin
- R+12MIT Election Lab
- Political archetype
- Republican loyalistAkashic typology
- Population
- 138,2522024 5-year
- Median household income
- $70,7372024 5-year
- White (non-Hispanic)
- 71.2%2024 5-year
- Black
- 10.6%2024 5-year
- Hispanic / Latino
- 9.0%2024 5-year
- Peak Republican margin
- R+19 in 2016MIT Election Lab
Constituent county margins for State Senate District 15, INOne 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.
5 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 24,650 | 31,811 | 57,489 | ||
| R | 25,788 | 32,445 | 59,546 | ||
| R | 19,457 | 29,527 | 52,268 | ||
| R | 21,153 | 29,813 | 51,881 | ||
| R | 25,109 | 27,410 | 53,044 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
25.0%
English
9.8%
Irish
9.2%
American
5.1%
French
2.6%
Italian
2.2%
Polish
2.1%
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: 36.2 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
$70,737
State Senate District 15 ranks near the middle of US counties.
State Senate District 15$70,737
Indiana$71,957
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
12.5%
Children face moderate poverty.
Children under 1817.5%
Working age (18–64)11.0%
Seniors (65+)8.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
87.6%
speak English only
Spanish5.6%
Asian & Pacific Islander3.8%
Other Indo-European2.4%
Other languages0.6%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 45.5% of residents not counted as adherents by any reporting body.
With a 52-point Republican presidential margin, this district ranks among the state's most reliably one-sided constituencies. Legislative races here rarely draw competitive general-election contests, making primary turnout the dominant electoral force.
The Republican margin in Indiana 15th State Senate District reached its widest at nineteen points in 2016. The margin in 2024 was twelve points, in line with the district's deep historical pattern.
Its loyalty is rooted in its place. Median household income of $70,737, a 71% non-Hispanic-white share, and a population of 138,252 together describe a district whose political habits are deeply settled.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Senate District 15, Indiana — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/sld-upper/18015/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 15, Indiana vote in 2024?
In 2024, State Senate District 15, Indiana voted Republican by 12.5 points (R+12), carried by the Republican candidate. Out of 57,489 votes cast, 24,650 went Democratic and 31,811 went Republican.
What is State Senate District 15, Indiana's political archetype?
Akashic classifies State Senate District 15, Indiana as a "Republican loyalist" district based on its long-arc presidential voting pattern. Across 5 elections in the dataset, the district has voted Democratic 0 times, Republican 5 times, and other 0 times.
How many people live in State Senate District 15, Indiana?
State Senate District 15, Indiana has a population of 138,252 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, Indiana?
Median household income in State Senate District 15, Indiana is $70,737 — below the national median of $80,734. The Indiana state median is $71,957.
What is the political history of State Senate District 15, Indiana?
Akashic tracks 5 presidential elections in State Senate District 15, Indiana from 2008 to 2024. Of those, 0 went Democratic and 5 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.