Sullivan County, IN Demographics
Sullivan County, IN is the 69th most populous of 92 counties in Indiana, with 20,817 residents across 447 square miles. That is about 47 people per square mile.
At the 2020 census
| Population | 20,817 |
|---|---|
| Land area | 447 sq mi |
| Density | 47 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Sullivan County compares to the US
We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Sullivan County, IN
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Sullivan County, IN — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Sullivan County, IN
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 503.01 | 3,317 | 8.1 | 409 |
| Census Tract 501.01 | 3,026 | 38.8 | 78 |
| Census Tract 505.01 | 2,993 | 68.2 | 44 |
| Census Tract 502 | 2,917 | 183.1 | 16 |
| Census Tract 503.02 | 2,727 | 5.4 | 505 |
| Census Tract 501.02 | 2,584 | 45.1 | 57 |
| Census Tract 504 | 2,217 | 68.4 | 32 |
| Census Tract 505.02 | 1,036 | 30.0 | 35 |
Related places
Other counties nearby
Nearest counties
Metro areas containing Sullivan County
About this page
This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.
Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.