Data as of November 4, 2026 · refreshed automatically from the official Indiana voter file
Sullivan County, Indiana has 13,413 active registered voters across 20 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 Sullivan County voted for president
Election results are public records.
Sullivan County at a glance.
Sullivan County had an estimated 20,768 residents in July 2024, the 69th most populous of Indiana's 92 counties, down 0.2% since the 2020 census. Of those, 16,962 are 18 or older, the voting-age population, and 19.9% are 65 or older. Its 13,413 active registered voters equal about 79.1% of that voting-age population.
It covers 447 square miles of land (46 people per square mile). The largest cities and towns are Sullivan (4,240), Shelburn (1,111), Farmersburg (1,066), Dugger (795) and Hymera (661). The American Community Survey (2020-2024) puts it at a median age of 41.7, a median household income of $56,204, 14.6% of adults 25 and older holding a bachelor's degree or higher and 76.4% of occupied homes owned by the people living in them.
In 2024, 8,792 votes were cast for president, about 51.8% of the voting-age population; the Democratic ticket took 22.8% and the Republican ticket 75.5%. The two-party margin moved from R+0.7 in 2008 to R+52.7 in 2024.
- Population (2024 estimate)
- 20,768
- Population (2020 census base)
- 20,817
- Voting-age population (18+)
- 16,962
- Active voters per 100 adults
- 79.1
- Residents 65 and older
- 19.9%
- People per square mile
- 46
- Land area
- 447 sq mi
- Median age
- 41.7
- Median household income
- $56,204
- Adults 25+ with a bachelor's degree
- 14.6%
- Owner-occupied homes
- 76.4%
Largest cities and towns
- Sullivan 4,240
- Shelburn 1,111
- Farmersburg 1,066
- Dugger 795
- Hymera 661
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 22.8% | 75.5% | R+52.7 | 8,792 |
| 2020 | 23.9% | 74.4% | R+50.5 | 8,994 |
| 2016 | 24.7% | 71.7% | R+47.0 | 8,559 |
| 2012 | 38.5% | 59.1% | R+20.6 | 8,289 |
| 2008 | 48.8% | 49.5% | R+0.7 | 8,782 |
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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