Data as of November 4, 2026 · refreshed automatically from the official Indiana voter file
Dearborn County, Indiana has 40,247 active registered voters across 45 precincts, as of November 2026.
Party registration
Indiana doesn't register voters by party, so there's no party breakdown to show. Party lean is usually inferred from primary participation; that data is in the voter file and available inside Motion51.
How Dearborn County voted for president
Election results are public records.
Dearborn County at a glance.
Dearborn County had an estimated 51,435 residents in July 2024, the 28th most populous of Indiana's 92 counties, up 1.5% since the 2020 census. Of those, 40,520 are 18 or older, the voting-age population, and 20.1% are 65 or older. Its 40,247 active registered voters equal about 99.3% of that voting-age population.
It covers 305 square miles of land (169 people per square mile). The largest cities and towns are Lawrenceburg (5,216), Greendale (4,581), Aurora (3,515), Dillsboro (1,387) and Moores Hill (696). The American Community Survey (2020-2024) puts it at a median age of 42.1, a median household income of $84,735, 25.3% of adults 25 and older holding a bachelor's degree or higher and 85.2% of occupied homes owned by the people living in them.
In 2024, 26,588 votes were cast for president, about 65.6% of the voting-age population; the Democratic ticket took 20.1% and the Republican ticket 78.4%. The two-party margin moved from R+34.9 in 2008 to R+58.3 in 2024.
- Population (2024 estimate)
- 51,435
- Population (2020 census base)
- 50,678
- Voting-age population (18+)
- 40,520
- Active voters per 100 adults
- 99.3
- Residents 65 and older
- 20.1%
- People per square mile
- 169
- Land area
- 305 sq mi
- Median age
- 42.1
- Median household income
- $84,735
- Adults 25+ with a bachelor's degree
- 25.3%
- Owner-occupied homes
- 85.2%
Largest cities and towns
- Lawrenceburg 5,216
- Greendale 4,581
- Aurora 3,515
- Dillsboro 1,387
- Moores Hill 696
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 20.1% | 78.4% | R+58.3 | 26,588 |
| 2020 | 21.5% | 76.9% | R+55.4 | 25,383 |
| 2016 | 20.4% | 75.7% | R+55.3 | 23,910 |
| 2012 | 29.2% | 68.9% | R+39.7 | 22,352 |
| 2008 | 32.1% | 67.0% | R+34.9 | 22,217 |
Sources: U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer; American Community Survey 2020–2024 5-year estimates; certified county presidential returns. Growth, density and turnout are simple arithmetic on those figures.
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